Showing posts with label Popular Articles. Show all posts
Showing posts with label Popular Articles. Show all posts

Monday, July 21, 2008

Meet The Challenge--Carbon Free Power!

On 18.07.2008 former Vice President Al Gore challenged to reset the way America makes energy choices. It was a powerful, inspiring speech.

He spoke about amazing opportunities -- and how making the correct choices will benefit our environment, our national security, our economy and our energy bills.

Al Gore has issued a powerful challenge: producing 100 percent of our electricity from renewable energy and truly clean carbon-free sources within 10 years. It's achievable, affordable and necessary. And we need to make this break from past habits and old ways of thinking. As he summarized so powerfully:


"We're borrowing money from China to buy oil from the Persian Gulf to burn it in ways that destroy the planet. Every bit of that's got to change."


In the past months he's been hosting a series of solutions summits with engineers, scientists, CEOs, and financiers. This speech pulled together some of the best thinking from those talks -- and highlighted what we each can do to end our dangerous addiction to fossil fuels and solve the climate crisis.


Thousands were present to hear him speak and I know that we'll be hearing a lot about his challenge in the days ahead. Be among the first to take on this challenge.


Watch the speech below and/or read the essence of the speech given below.


Thank you.


ramjee





Ladies and gentlemen:

There are times in the history of our nation when our very way of life depends upon dispelling illusions and awakening to the challenge of a present danger. In such moments, we are called upon to move quickly and boldly to shake off complacency, throw aside old habits and rise, clear-eyed and alert, to the necessity of big changes. Those who, for whatever reason, refuse to do their part must either be persuaded to join the effort or asked to step aside. This is such a moment. The survival of the United States of America as we know it is at risk. And even more - if more should be required - the future of human civilization is at stake.

I don't remember a time in our country when so many things seemed to be going so wrong simultaneously. Our economy is in terrible shape and getting worse, gasoline prices are increasing dramatically, and so are electricity rates. Jobs are being outsourced. Home mortgages are in trouble. Banks, automobile companies and other institutions we depend upon are under growing pressure. Distinguished senior business leaders are telling us that this is just the beginning unless we find the courage to make some major changes quickly.

The climate crisis, in particular, is getting a lot worse - much more quickly than predicted. Scientists with access to data from Navy submarines traversing underneath the North polar ice cap have warned that there is now a 75 percent chance that within five years the entire ice cap will completely disappear during the summer months. This will further increase the melting pressure on Greenland. According to experts, the Jakobshavn glacier, one of Greenland's largest, is moving at a faster rate than ever before, losing 20 million tons of ice every day, equivalent to the amount of water used every year by the residents of New York City.

Two major studies from military intelligence experts have warned our leaders about the dangerous national security implications of the climate crisis, including the possibility of hundreds of millions of climate refugees destabilizing nations around the world.

Just two days ago, 27 senior statesmen and retired military leaders warned of the national security threat from an "energy tsunami" that would be triggered by a loss of our access to foreign oil. Meanwhile, the war in Iraq continues, and now the war in Afghanistan appears to be getting worse.

And by the way, our weather sure is getting strange, isn't it? There seem to be more tornadoes than in living memory, longer droughts, bigger downpours and record floods. Unprecedented fires are burning in California and elsewhere in the American West. Higher temperatures lead to drier vegetation that makes kindling for mega-fires of the kind that have been raging in Canada, Greece, Russia, China, South America, Australia and Africa. Scientists in the Department of Geophysics and Planetary Science at Tel Aviv University tell us that for every one degree increase in temperature, lightning strikes will go up another 10 percent. And it is lightning, after all, that is principally responsible for igniting the conflagration in California today.

Like a lot of people, it seems to me that all these problems are bigger than any of the solutions that have thus far been proposed for them, and that's been worrying me.

I'm convinced that one reason we've seemed paralyzed in the face of these crises is our tendency to offer old solutions to each crisis separately - without taking the others into account. And these outdated proposals have not only been ineffective - they almost always make the other crises even worse.

Yet when we look at all three of these seemingly intractable challenges at the same time, we can see the common thread running through them, deeply ironic in its simplicity: our dangerous over-reliance on carbon-based fuels is at the core of all three of these challenges - the economic, environmental and national security crises.

We're borrowing money from China to buy oil from the Persian Gulf to burn it in ways that destroy the planet. Every bit of that's got to change.

But if we grab hold of that common thread and pull it hard, all of these complex problems begin to unravel and we will find that we're holding the answer to all of them right in our hand.
The answer is to end our reliance on carbon-based fuels.

In my search for genuinely effective answers to the climate crisis, I have held a series of "solutions summits" with engineers, scientists, and CEOs. In those discussions, one thing has become abundantly clear: when you connect the dots, it turns out that the real solutions to the climate crisis are the very same measures needed to renew our economy and escape the trap of ever-rising energy prices. Moreover, they are also the very same solutions we need to guarantee our national security without having to go to war in the Persian Gulf.

What if we could use fuels that are not expensive, don't cause pollution and are abundantly available right here at home?

We have such fuels. Scientists have confirmed that enough solar energy falls on the surface of the earth every 40 minutes to meet 100 percent of the entire world's energy needs for a full year. Tapping just a small portion of this solar energy could provide all of the electricity America uses.

And enough wind power blows through the Midwest corridor every day to also meet 100 percent of US electricity demand. Geothermal energy, similarly, is capable of providing enormous supplies of electricity for America.

The quickest, cheapest and best way to start using all this renewable energy is in the production of electricity. In fact, we can start right now using solar power, wind power and geothermal power to make electricity for our homes and businesses.

But to make this exciting potential a reality, and truly solve our nation's problems, we need a new start.

That's why I'm proposing today a strategic initiative designed to free us from the crises that are holding us down and to regain control of our own destiny. It's not the only thing we need to do. But this strategic challenge is the lynchpin of a bold new strategy needed to re-power America.

Today I challenge our nation to commit to producing 100 percent of our electricity from renewable energy and truly clean carbon-free sources within 10 years.

This goal is achievable, affordable and transformative. It represents a challenge to all Americans - in every walk of life: to our political leaders, entrepreneurs, innovators, engineers, and to every citizen.

A few years ago, it would not have been possible to issue such a challenge. But here's what's changed: the sharp cost reductions now beginning to take place in solar, wind, and geothermal power - coupled with the recent dramatic price increases for oil and coal - have radically changed the economics of energy.

When I first went to Congress 32 years ago, I listened to experts testify that if oil ever got to $35 a barrel, then renewable sources of energy would become competitive. Well, today, the price of oil is over $135 per barrel. And sure enough, billions of dollars of new investment are flowing into the development of concentrated solar thermal, photovoltaics, windmills, geothermal plants, and a variety of ingenious new ways to improve our efficiency and conserve presently wasted energy.

And as the demand for renewable energy grows, the costs will continue to fall. Let me give you one revealing example: the price of the specialized silicon used to make solar cells was recently as high as $300 per kilogram. But the newest contracts have prices as low as $50 a kilogram.

You know, the same thing happened with computer chips - also made out of silicon. The price paid for the same performance came down by 50 percent every 18 months - year after year, and that's what's happened for 40 years in a row.

To those who argue that we do not yet have the technology to accomplish these results with renewable energy: I ask them to come with me to meet the entrepreneurs who will drive this revolution. I've seen what they are doing and I have no doubt that we can meet this challenge.

To those who say the costs are still too high: I ask them to consider whether the costs of oil and coal will ever stop increasing if we keep relying on quickly depleting energy sources to feed a rapidly growing demand all around the world. When demand for oil and coal increases, their price goes up. When demand for solar cells increases, the price often comes down.

When we send money to foreign countries to buy nearly 70 percent of the oil we use every day, they build new skyscrapers and we lose jobs. When we spend that money building solar arrays and windmills, we build competitive industries and gain jobs here at home.

Of course there are those who will tell us this can't be done. Some of the voices we hear are the defenders of the status quo - the ones with a vested interest in perpetuating the current system, no matter how high a price the rest of us will have to pay. But even those who reap the profits of the carbon age have to recognize the inevitability of its demise. As one OPEC oil minister observed, "The Stone Age didn't end because of a shortage of stones."

To those who say 10 years is not enough time, I respectfully ask them to consider what the world's scientists are telling us about the risks we face if we don't act in 10 years. The leading experts predict that we have less than 10 years to make dramatic changes in our global warming pollution lest we lose our ability to ever recover from this environmental crisis. When the use of oil and coal goes up, pollution goes up. When the use of solar, wind and geothermal increases, pollution comes down.

To those who say the challenge is not politically viable: I suggest they go before the American people and try to defend the status quo. Then bear witness to the people's appetite for change.

I for one do not believe our country can withstand 10 more years of the status quo. Our families cannot stand 10 more years of gas price increases. Our workers cannot stand 10 more years of job losses and outsourcing of factories. Our economy cannot stand 10 more years of sending $2 billion every 24 hours to foreign countries for oil. And our soldiers and their families cannot take another 10 years of repeated troop deployments to dangerous regions that just happen to have large oil supplies.

What could we do instead for the next 10 years? What should we do during the next 10 years? Some of our greatest accomplishments as a nation have resulted from commitments to reach a goal that fell well beyond the next election: the Marshall Plan, Social Security, the interstate highway system. But a political promise to do something 40 years from now is universally ignored because everyone knows that it's meaningless. Ten years is about the maximum time that we as a nation can hold a steady aim and hit our target.

When President John F. Kennedy challenged our nation to land a man on the moon and bring him back safely in 10 years, many people doubted we could accomplish that goal. But 8 years and 2 months later, Neil Armstrong and Buzz Aldrin walked on the surface of the moon.

To be sure, reaching the goal of 100 percent renewable and truly clean electricity within 10 years will require us to overcome many obstacles. At present, for example, we do not have a unified national grid that is sufficiently advanced to link the areas where the sun shines and the wind blows to the cities in the East and the West that need the electricity. Our national electric grid is critical infrastructure, as vital to the health and security of our economy as our highways and telecommunication networks. Today, our grids are antiquated, fragile, and vulnerable to cascading failure. Power outages and defects in the current grid system cost US businesses more than $120 billion dollars a year. It has to be upgraded anyway.

We could further increase the value and efficiency of a Unified National Grid by helping our struggling auto giants switch to the manufacture of plug-in electric cars. An electric vehicle fleet would sharply reduce the cost of driving a car, reduce pollution, and increase the flexibility of our electricity grid.

At the same time, of course, we need to greatly improve our commitment to efficiency and conservation. That's the best investment we can make.

America's transition to renewable energy sources must also include adequate provisions to assist those Americans who would unfairly face hardship. For example, we must recognize those who have toiled in dangerous conditions to bring us our present energy supply. We should guarantee good jobs in the fresh air and sunshine for any coal miner displaced by impacts on the coal industry. Every single one of them.

Of course, we could and should speed up this transition by insisting that the price of carbon-based energy include the costs of the environmental damage it causes. I have long supported a sharp reduction in payroll taxes with the difference made up in CO2 taxes. We should tax what we burn, not what we earn. This is the single most important policy change we can make.

In order to foster international cooperation, it is also essential that the United States rejoin the global community and lead efforts to secure an international treaty at Copenhagen in December of next year that includes a cap on CO2 emissions and a global partnership that recognizes the necessity of addressing the threats of extreme poverty and disease as part of the world's agenda for solving the climate crisis.

Of course the greatest obstacle to meeting the challenge of 100 percent renewable electricity in 10 years may be the deep dysfunction of our politics and our self-governing system as it exists today. In recent years, our politics has tended toward incremental proposals made up of small policies designed to avoid offending special interests, alternating with occasional baby steps in the right direction. Our democracy has become sclerotic at a time when these crises require boldness.

It is only a truly dysfunctional system that would buy into the perverse logic that the short-term answer to high gasoline prices is drilling for more oil ten years from now.

Am I the only one who finds it strange that our government so often adopts a so-called solution that has absolutely nothing to do with the problem it is supposed to address? When people rightly complain about higher gasoline prices, we propose to give more money to the oil companies and pretend that they're going to bring gasoline prices down. It will do nothing of the sort, and everyone knows it. If we keep going back to the same policies that have never ever worked in the past and have served only to produce the highest gasoline prices in history alongside the greatest oil company profits in history, nobody should be surprised if we get the same result over and over again. But the Congress may be poised to move in that direction anyway because some of them are being stampeded by lobbyists for special interests that know how to make the system work for them instead of the American people.

If you want to know the truth about gasoline prices, here it is: the exploding demand for oil, especially in places like China, is overwhelming the rate of new discoveries by so much that oil prices are almost certain to continue upward over time no matter what the oil companies promise. And politicians cannot bring gasoline prices down in the short term.

However, there actually is one extremely effective way to bring the costs of driving a car way down within a few short years. The way to bring gas prices down is to end our dependence on oil and use the renewable sources that can give us the equivalent of $1 per gallon gasoline.

Many Americans have begun to wonder whether or not we've simply lost our appetite for bold policy solutions. And folks who claim to know how our system works these days have told us we might as well forget about our political system doing anything bold, especially if it is contrary to the wishes of special interests. And I've got to admit, that sure seems to be the way things have been going. But I've begun to hear different voices in this country from people who are not only tired of baby steps and special interest politics, but are hungry for a new, different and bold approach.

We are on the eve of a presidential election. We are in the midst of an international climate treaty process that will conclude its work before the end of the first year of the new president's term. It is a great error to say that the United States must wait for others to join us in this matter. In fact, we must move first, because that is the key to getting others to follow; and because moving first is in our own national interest.

So I ask you to join with me to call on every candidate, at every level, to accept this challenge - for America to be running on 100 percent zero-carbon electricity in 10 years. It's time for us to move beyond empty rhetoric. We need to act now.

This is a generational moment. A moment when we decide our own path and our collective fate. I'm asking you - each of you - to join me and build this future. Please join the WE campaign at wecansolveit.org.We need you. And we need you now. We're committed to changing not just light bulbs, but laws. And laws will only change with leadership.

On July 16, 1969, the United States of America was finally ready to meet President Kennedy's challenge of landing Americans on the moon. I will never forget standing beside my father a few miles from the launch site, waiting for the giant Saturn 5 rocket to lift Apollo 11 into the sky. I was a young man, 21 years old, who had graduated from college a month before and was enlisting in the United States Army three weeks later.

I will never forget the inspiration of those minutes. The power and the vibration of the giant rocket's engines shook my entire body. As I watched the rocket rise, slowly at first and then with great speed, the sound was deafening. We craned our necks to follow its path until we were looking straight up into the air. And then four days later, I watched along with hundreds of millions of others around the world as Neil Armstrong took one small step to the surface of the moon and changed the history of the human race.

We must now lift our nation to reach another goal that will change history. Our entire civilization depends upon us now embarking on a new journey of exploration and discovery. Our success depends on our willingness as a people to undertake this journey and to complete it within 10 years. Once again, we have an opportunity to take a giant leap for humankind.


Wednesday, July 02, 2008

Friends for Life!

You must all have heard of the story of the rabbit and the tortoise, but the following story, is about an unusual bonding between a baby Hippo and a Centenarian Tortoise. (I learnt, the story has been in circulation on the Internet, since January, 2005). It is a different, and very touching true story, which sends a strong message, to all of us. I only yearn, that if only all humankind can live together like this, without any prejudice of status in life, religion or colour, it will be heaven on earth!

~ ramjee





A baby hippopotamus that survived the tsunami waves on the Kenyan coast has formed a strong bond with a giant male century-old tortoise in an animal facility in the port city of Mombassa, officials said.

Bereaved by the forces of nature the baby hippopotamus, nicknamed Owen and weighing about300 kilograms (650 pounds), was swept down Sabaki River into the Indian Ocean, then forced back to shore when tsunami waves struck the Kenyan coast on December 26, before wildlife rangers rescued him. The wildlife officials were alerted to the imperilled hippo before Christmas, when hoteliers in Malindi spotted the little fellow, in the company of a number of adults of his kind, foundering in the surf off the coast. By the time wildlife officials arrived, Owen was alone, having become separated from his herd. Had he not been rescued, the ocean's waters would have done in the youngster because long immersion in salt water would have led to fatal dehydration.

As soon as the Hippo was placed in Haller Park, a wildlife sanctuary in the coastal city of Mombassa, Kenya, the orphaned youngster immediately ran to the giant tortoise also housed in that space. The tortoise, named Mzee (Swahili for "old man") and estimated to be between 100 and 130 years old, was not immediately taken with the brash newcomer he turned and hissed, forcing the hippo to back away. Yet Owen persisted in following the tortoise around the park (and even into a pool), and within days the pair had forged a friendship, eating and sleeping together. Owen has even been seen to lick the tortoise, whom he regards as his new mother. (Wildlife workers speculated that Owen may have been attracted to Mzee as a parental figure because the tortoise's shape and color are similar to those of an adult hippopotamus.)

'It is incredible. A-less-than-a-year-old hippo has adopted a male tortoise, about a century old, and the tortoise seems to be very happy with being a 'mother',' ecologist Paula Kahumbu, who is in charge of Lafarge Park , told AFP. 'After it was swept away and lost its mother, the hippo was traumatized. It had to look for something to be a surrogate mother.

Fortunately, it landed on the tortoise and established a strong bond. They swim, eat and sleep together,' the ecologist added. 'The hippo follows the tortoise exactly the way it followed its mother. If somebody approaches the tortoise, the hippo becomes aggressive, as if protecting its biological mother,' Kahumbu added. 'The hippo is a young baby, he was left at a very tender age and by nature, hippos are social animals that like to stay with their mothers for four years,' he explained.

'Life is not measured by the number of breaths we take, but by the moments that take our breath away.' This is a real story that shows that our differences don't matter much when we need the comfort of another. We could all learn a lesson from these two creatures of God, 'Look beyond the differences and find a way to walk the path together.'

As of December 2005, a year after their initial meeting, Owen and Mzee are still together. Conservation workers are planning sometime in 2006 to introduce Owen to Cleo, a 13-year-old female hippo who has gone without the companionship of her own species for over ten years.

Update:

In March 2006, the Hollywood Reporter announced that Walden Media were planning to produce "Tortoise and Hippo," a film inspired by the photograph of Owen and Mzee displayed above:

Oscar-winning special-effects maven John Dykstra is set to make his directing debut on "Tortoise and Hippo," a film inspired by a photo that circulated following the Asian tsunami.

The snapshot documented a baby hippo and 100-year-old tortoise comforting each other at a wildlife sanctuary after being rescued from the Indian Ocean.

"The actual event that inspired the movie captured the imagination of the world," said Alex Schwartz, executive VP production at Walden Media, one of the producers of the film.

"We're going to create a movie inspired by it that we hope can tell a story everyone can relate to, which is that you can be different but still belong to the same family."

Friday, June 27, 2008

The Girl Who Silenced The World....

The following is one of the best speeches I've ever heard, read or listened to. This is the speech of a twelve year young girl giving a speech at the United Nations Earth Summit that took place in Rio de Janeiro 1992.

During the first seconds of the film I didn’t quite understand what was going on - What is that child doing there? - I thought, but I quickly realized, that what I was seeing was something really amazing: a twelve year old child telling to the world that enough is enough, telling to the world leaders to stop destroying the fauna and flora, to stop polluting the air, the ocean and the soil, to end the poverty and social injustices, to stop killing our earth…

This was sixteen years, today Severn Suzuki is is an important environmental activist, was a member of Kofi Annan’s Special Advisory Panel in the past.

I encourage everyone to watch this video, may it serve as an inspiration for us all. (The transcript can be found below.)





Hello, I'm Severn Suzuki speaking for E.C.O. - The Environmental Children's Organisation.

We are a group of twelve and thirteen-year-olds from Canada trying to make a difference:
Vanessa Suttie, Morgan Geisler, Michelle Quigg and me. We raised all the money ourselves to come six thousand miles to tell you adults you must change your ways. Coming here today, I have no hidden agenda. I am fighting for my future.

Losing my future is not like losing an election or a few points on the stock market. I am here to speak for all generations to come.

I am here to speak on behalf of the starving children around the world whose cries go unheard.

I am here to speak for the countless animals dying across this planet because they have nowhere left to go. We cannot afford to be not heard.

I am afraid to go out in the sun now because of the holes in the ozone. I am afraid to breathe the air because I don't know what chemicals are in it.

I used to go fishing in Vancouver with my dad until just a few years ago we found the fish full of cancers. And now we hear about animals and plants going exinct every day -- vanishing forever.

In my life, I have dreamt of seeing the great herds of wild animals, jungles and rainforests full of birds and butterfilies, but now I wonder if they will even exist for my children to see.

Did you have to worry about these little things when you were my age?

All this is happening before our eyes and yet we act as if we have all the time we want and all the solutions. I'm only a child and I don't have all the solutions, but I want you to realise, neither do you!

* You don't know how to fix the holes in our ozone layer.
* You don't know how to bring salmon back up a dead stream.
* You don't know how to bring back an animal now extinct.
* And you can't bring back forests that once grew where there is now desert.

If you don't know how to fix it, please stop breaking it!

Here, you may be delegates of your governments, business people, organisers, reporters or poiticians - but really you are mothers and fathers, brothers and sister, aunts and uncles - and all of you are somebody's child.
I'm only a child yet I know we are all part of a family, five billion strong, in fact, 30 million species strong and we all share the same air, water and soil -- borders and governments will never change that.

I'm only a child yet I know we are all in this together and should act as one single world towards one single goal.

In my anger, I am not blind, and in my fear, I am not afraid to tell the world how I feel.

In my country, we make so much waste, we buy and throw away, buy and throw away, and yet northern countries will not share with the needy. Even when we have more than enough, we are afraid to lose some of our wealth, afraid to share.

In Canada, we live the privileged life, with plenty of food, water and shelter -- we have watches, bicycles, computers and television sets.

Two days ago here in Brazil, we were shocked when we spent some time with some children living on the streets. And this is what one child told us: "I wish I was rich and if I were, I would give all the street children food, clothes, medicine, shelter and love and affection."

If a child on the street who has nothing, is willing to share, why are we who have everyting still so greedy?

I can't stop thinking that these children are my age, that it makes a tremendous difference where you are born, that I could be one of those children living in the Favellas of Rio; I could be a child starving in Somalia; a victim of war in the Middle East or a beggar in India.

I'm only a child yet I know if all the money spent on war was spent on ending poverty and finding environmental answers, what a wonderful place this earth would be!

At school, even in kindergarten, you teach us to behave in the world. You teach us:

* not to fight with others,
* to work things out,
* to respect others,
* to clean up our mess,
* not to hurt other creatures
* to share - not be greedy.
Then why do you go out and do the things you tell us not to do?

Do not forget why you're attending these conferences, who you're doing this for -- we are your own children. You are deciding what kind of world we will grow up in. Parents should be able to comfort their children by saying "everyting's going to be alright" , "we're doing the best we can" and "it's not the end of the world".

But I don't think you can say that to us anymore. Are we even on your list of priorities? My father always says "You are what you do, not what you say."

Well, what you do makes me cry at night. You grown ups say you love us. I challenge you, please make your actions reflect your words. Thank you for listening.

Monday, June 16, 2008

Cicada Song

Last week, I had been to Nagarhole, Rajiv Gandhi National Park (see map) and got to watch and learn from several of the marvellous creatures of nature. Cicada was one, which we frequently got the chance to observe. I was of the belief that they make their noise by rubbing their legs as the crickets and locusts do! I was wrong! They make their noise using special body part called tymbals. if you are interested in learning more about these magnificent insects, please read further!


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The Insect

Cicada
(sih-kay-duh) is an insect of the order with large eyes wide apart on the head and usually transparent, well-veined wings. The adult insect, sometimes called an imago, is usually 2 to 5 cm long, although some tropical species can reach 15 cm. Cicadas have prominent eyes set wide apart on the sides of the head, short antennae protruding between or in front of the eyes, and membranous front wings. Over 2,500 species of cicada are found in temperate to tropical climates where they are among the most widely recognized of all insects, mainly due to their large size and remarkable acoustic talents.

Harmless
Although the Cicadas appear large and scary, they do not bite or sting, are benign to humans, and are not considered pests. Some people in Ancient Greece, China, Malaysia, Burma, Latin America and the Congo eat cicadas: the female is prized as it is meatier. Some of them are considered as pests, when they swarm the area in large numbers.


Did You Know?
Desert cicadas are also among the few insects known to cool themselves by sweating, while many other cicadas can voluntarily raise their body temperatures as much as 22oC above ambient temperature.


The Cicada Song

Male cicadas have loud noisemakers called "timbals" on the sides of the abdominal base. Unlike other familiar sound-producing insects like crickets their "singing" is not created by the stridulation (where two structures are rubbed against one another). The timbals are regions of the exoskeleton that are modified to form a complex membrane with thin, membranous portions and thickened "ribs". Contracting the internal timbal muscles produces a clicking sound as the timbals buckle inwards. As these muscles relax, the timbals return to their original position producing another click. The interior of the male abdomen is substantially hollow to amplify the resonance of the sound. A cicada rapidly vibrates these membranes, and enlarged chambers derived from the tracheae make its body serve as a resonance chamber, greatly amplifying the sound. They modulate their noise by wiggling their abdomens toward and away from the tree that they are on. Also, each species is known to have its own distinctive song.



Although only males produce the cicadas' distinctive sound, both sexes have tympana, which are membranous structures used to detect sounds and thus the cicadas' equivalent of ears. Males can disable their own tympana while calling. Adult cicadas have a sideways-
ridged plate where the mouth is in normal insects.

Some cicadas produce sounds up to 120 dB "at close range", among the loudest of all insect-produced sounds. Conversely, some small species are known to have songs in such high pitch, that the noise is inaudible to humans. Species have different mating songs to ensure they attract the appropriate mate. Male cicadas are also capable of making a loud squawk when disturbed. It is believed that such squawking may be effective in deterring predators. Males of many species tend to gather which creates a greater sound intensity and protects against avian predators. It can be difficult to determine which direction(s) cicada song is coming from, because the low pitch carries well and because it may, in fact, be coming from many directions at once, as cicadas in various trees all make noise at once.

In addition to the mating song, many species also have a distinct distress call, usually a somewhat broken and erratic sound emitted when an individual is seized. A number of species also have a courtship song, which is often a quieter call and is produced after a female has been drawn by the calling song.

The song of the cicada is a favourite sound effect used by filmmakers and animators as a means of representing silence, pathos, and the great outdoors.

Life Cycle

After mating, the female cuts slits into the bark of a twig, and into these she deposits her eggs. She may do so repeatedly, until she has laid several hundred eggs. When the eggs hatch, the newborn nymphs drop to the ground, where they burrow. Most cicadas go through a life cycle that lasts from two to five years. These long life cycles are an adaptation to predators such as the cicada killer wasp and praying mantis, as a predator could not regularly fall into synchrony with the cicadas.

The insects spend most of the time that they are underground as nymphs at depths ranging from about 30 cm up to 2.5 m. The nymphs feed on root juice and have strong front legs for digging. In the final nymphal instar, they construct an exit tunnel to the surface and emerge. They then moult (shed their skins), on a nearby plant for the last time and emerge as adults. The abandoned skins remain, still clinging to the bark of trees. Cicadas inhabit both native and exotic plants including tall trees, coastal mangroves, urban gardens and desert shrubs.

Tuesday, April 08, 2008

Will We Become A Refugee of Climate Change...?


Vast stretches of coastal India may just go under water if global warming goes unchecked.

According to a report titled Blue Alert by Greenpeace, if present trends are any indication, there will be a five-degree increase in temperature over the next hundred years. This will submerge large areas and displace around fifty million people in India alone. The report also indicates that a policy change can still avert a two-degree rise in less than a decade.

Now an attempt is being made to mobilise public support to force the government to take a firm stand on climate change. In Chennai, (the city where I live) alone there will be ten million people who may be displaced. We'll become climate refugees.

Many countries have signed the Kyoto protocol in order to bring down green house gas emissions to levels that existed before 1992. But global emissions have actually risen by 24 per cent mainly due to emissions from developing countries like India and China.

Although the US tops the list in CO2 emissions, it wants developing countries like India and China to take the lead.

In an effort to make the government understand this and pressurize them take action, an attempt is being made to campaign for the public support to mitigate climate change rather than waiting for the catastrophe to happen!

Climate change could also trigger erratic monsoons and break down agricultural systems in the vast and densely populated Gangetic delta. A study conducted on the rapidly warming South Asia, the global environment group said India, whose economy has grown by 8-9 per cent annually in recent years, contributes around 4 per cent of global greenhouse gas emissions as its consumption of fossil fuels grows.

The UN Development Programme in its latest report has also warned climate change will hit the world's poorest countries, increasing risks of disease, destruction of traditional livelihoods and triggering massive displacement. Together, India, Bangladesh and Pakistan have nearly 130 million people living along coastal areas less than 10 metres (33 feet) above sea level. (See map). All of us are in the danger of becoming Climate Refugee!

We are already seeing the effects," said Sudhir Chella Rajan, a professor at the Indian Institute of Technology, Chennai. He said the effect of rising temperatures was already apparent in the recurrent floods in coastal Bangladesh.

Join the Campaign!

Greenpeace has simultaneously launched the ‘Blue Alert’ campaign in five of the most vulnerable coastal cities in India: Kolkata, Mumbai, Chennai, Kochi and Goa. The campaign aims to catalyse people in the coastal danger zones, empowering them with information that they can raise with their elected representatives.

Globally more than 1 billion people live in low-lying areas that could be affected by sea level rise. Much of the productive land used to produce food is also in coastal areas at risk from rising sea levels.

The solutions to prevent catastrophic climate change impacts and avoid hundreds of millions of people from being displaced already exist. What’s needed is a revolution in the way we generate energy and an end to global deforestation.

Your voice can help start that revolution!

If you are a citizen of Chennai, please assemble at Besant Nagar Elliot's Beach on Saturday, April 12, 2008.

For further information you can contact the campaigners in the following cities:


Natasha Chandy
+91 93713 33492
natasha.chandy@greenpeace.org


Tanvir
+91 97104 44255

Bangalore
Vinuta Gopal +91 98455 35418
vgopal@dialb.greenpeace.org

Ankur Agarwal +91 98866 22143
aagarwal@in.greenpeace.org

Mumbai
Brikesh Singh +91 98800 92210
bsingh@greenpeace.org

Shweta Ganesh
+91 98450 68125
shweta.ganesh@in.greenpeace.org

Kochi

Somnath Narayan
+91 99020 96657
snarayan@in.greenpeace.org

Kolkata
Maitree Dasgupta
+91 99001 45422
mdasgupt@greenpeace.org

Jayashree Nandi
+91 93438 68011
jnandi@greenpeace.org

Goa

Saumya Sanati
+91 98237 21681
soumya.sanati@gmail.com

Saturday, March 22, 2008

Did Lilliputians Really Exist...?


A recent discovery of thousands of some ancient bones of humans discovered in Palau, an island in the Pacific Ocean hints at some such probability… The bones indicate that the inhabitants were of particularly small size. (See pictures of the Palau remains)

The remains are between 900 and 2,900 years old and align with Homo sapiens. However, the older bones are tiny and exhibit several traits considered primitive, or archaic, for the human lineage. Lee Berger, the paleoanthropologist at the University of Witwatersrand in Johannesburg, South Africa, who discovered the skeletons was on vacation in 2006, kayaking around rocky islands about 600 kilometers east of the Philippines.

(Watch the video from the National Geographic site: : "Ancient Little People Found?")

The caves were littered with bones that had been dislodged by waves and piled like driftwood. Others had remained buried deep in the sandy floor, and more, including several skulls, were cemented to the cave walls. Two sets of human bones have been found in the Palauan caves. The most recent remains were found near the entrance to one of the caves and appear normal in size. Older bones found deeper in the caves are stranger and much smaller.

The smaller, older bones represent people who were 90 to 120 cm) tall and weighed between 32 and 41 kilograms. The diminutive people were in fact similar in size to the so-called Hobbit (a separate human species, Homo floresiensis) discovered in National Geographic Society-supported excavations on the Indonesian island of Flores in 2003. Aside from being tiny, the Palauan bones show that some of these people lacked chins and had deep jaws, large teeth, and small eye sockets.

However, the estimated brain size of the early Palauans is about twice the size of the hobbit brain. This and several other features, including the shape of the face and hips, suggest that the Palauan bones should be classified as Homo sapiens. Palau lacks indigenous terrestrial mammals and large reptiles that early Palauans might have used for food. Archaeological records indicate fishing was not a local activity until about 1,700 years ago, around the time bigger bones appear in the caves. The early Palauans' limited diet, combined with a tropical climate, absence of predators, a small founding population, and genetic isolation, may have produced, these very odd features and very small body size, opine the scientists. The Palauan remains suggest these features may just be a consequence of insular dwarfism, a shrinking process that some scientists attribute to the stresses of a small island environment.

Refer the image above where a newfound skull from Palau (center) is compared with a model of a modern human female skull (left) and a model of Homo floresiensis' skull (right).

If the interpretation of the Palauan remains is correct, the find may add more fuel to the debate over whether people like the Lilliputians, in the Gulliver’s Travels could have really existed.

Read The National Geographic Story: “Ancient Bones of Small Humans Discovered in Palau".

Thursday, March 20, 2008

Hot Air...!






Is there a possibility of ingesting (and becoming infected with) enteric bacteria from a nearby fart?

Dr Karl Kruszelnicki (the noted Australian author and science commentator on Australian radio and television) and his microbiologist friend have put this to the test! They took a agar plate (bacterial growth medium) home and had a eight year old boy fart on the plate, pants down, from a distance of five centimetres. Overnight, the second Petri dish sprouted visible lumps of two types of bacteria that are usually found only in the gut and on the skin. But the flatus which had passed through clothing caused no bacteria to sprout, which suggests that clothing acted as a filter!

Most notable is the concentration of enteric bacteria in the "initial blast zone" at the centre of the plate, surrounded by the mixed skin and enteric bacteria located in the "splatter ring" around the "initial blast zone".

Finding

Don't situate an unprotected face within 5 cm of an unsheathed flatulent anus. Also, don't fart naked near food. “Our deduction is that the enteric zone in the second Petri dish was caused by the flatus itself, and the splatter ring around that was caused by the sheer velocity of the fart, which blew skin bacteria from the cheeks and blasted it onto the dish. It seems, therefore, that flatus can cause infection if the emitter is naked, but not if he or she is clothed. But the results of the experiment should not be considered alarming, because neither type of bacterium is harmful. In fact, they're similar to the ‘friendly’ bacteria found in yoghurt.

All right, it's not rocket science. But then again, maybe it is?”


Now, Just for fun... Do you know how or why Dinoasaurs disappeared from Earth... A Jursaic Fart!


Wednesday, March 12, 2008

Really Achieving Your Childhood Dreams




"Journeys" are special University Lectures in which Carnegie Mellon faculty members share their reflections on their journeys -- the everyday actions, decisions, challenges and joys that make a life.

With equal parts humor and heart, Carnegie Mellon Professor Randy Pausch recently delivered a one-of-a-kind university lecture that moved an overflow crowd at Carnegie Mellon - and is now moving audiences around the globe.

Follow his inspiring journey through his childhood dreams to groundbreaking achievements at Carnegie Mellon. Co-founder of the university's Entertainment Technology Center and creator of Alice, a revolutionary software that teaches computer programming, Randy shares the lessons he's learned that helped him turn his childhood dreams into reality.

Dr. Randy Pausch, a Professor in
Carnegie Mellon University who is ailing from pancreatic cancer, gave his last lecture at the university Sept. 18, 2007, before a packed McConomy Auditorium. In his moving talk, "Really Achieving Your Childhood Dreams," Pausch talked about his lessons learned and gave advice to students on how to achieve their own career and personal goals.

To know about his present health status, please look: Health Status

If you desire, you can download the PDF file of the transcript here: Transcript
Watch Randy's lecture on the video below

Tuesday, March 11, 2008

The Longest English Word



Back in the eighteenth century, the word is said to have been invented as an erudite joke by students of the Eton College, who, upon consulting their Latin Grammar Textbook, found four ways of saying "don't care". In order, those were flocci facere, nauci facere, nihili facere, and pili facere (which sound like four of the seven dwarves, Roman version, but I digress). As a learned joke, somebody put all four of these together and then stuck –fication on the end to make a noun for the act of deciding that something is totally and absolutely valueless. It's one of the longest words in the English language. A quick Latin lesson:

  1. Flocci facere (is from floccus, literally a tuft of wool and the source of English words like "fleece" and is related to the verb floccipendo which means, literally, "to give the value of a bit of fleece" or "to take lightly.")
  2. Nauci facere (is from naucum, meaning "few" or "almost nothing.")
  3. Nihili facere (is from ni+hilum, "not even a thread" or nothing; as in words like nihilism and annihilate)
  4. Pili facere (is from pilus, a small hair, which we have inherited in words like depilatory, but which in Latin mean a trifle.)
  5. Facere is from the verb facio meaning "to do" or "to make."
  6. Tion" is a standard English nominalization form.

When put together, we get "the making light of a few trifles of nothing." Thus, the meaning of floccinaucinihilipilification becomes "the act of estimating something as worthless."

flɒksəˌnɔsəˌnaɪhɪləˌpɪləfɪˈkeɪʃən/ [
flok-suh-naw-suh-nahy-hil-uh-pil-uh-fi-key-shuhn]

Of course, the word is often spelled with hyphens, and has even spawned the back formations floccinaucical (inconsiderable or trifling) and floccinaucity (the essence or quality of being of small importance). These can then be edited to form verbs, like floccinaucinihilipilificate, and adjectives, like floccinaucinihilipilificatious, or even other nouns, like floccinaucinihilipilificatism. When the common English nominal suffix -ness is then added to the above adjective, a thirty-four letter noun floccinaucinihilipilificatiousness is formed, which means "smallness" or "insignificance."

The next most commonly referred to long word, antidisestablishmentarianism, the ideology of being against the dissolution of the Church of England.

With 29 letters, it is the longest non-technical word. The word’s main function is to be trotted out as an example of a long word that can be used in everyday speech. Pneumonoultramicroscopicsilicovolcanoconiosis, the actual longest word is highly scientific and specific.
The first recorded use is by William Shenstone in a letter in 1741: “I loved him for nothing so much as his flocci-nauci-nihili-pili-fication of money”.

It had a rare public airing in 1999 when Senator Jesse Helms used it in commenting on the demise of the Comprehensive Test Ban Treaty: “I note your distress at my floccinaucinihilipilification of the CTBT”.

Lopado­temacho­selacho­gameo­kranio­leipsano­drim­hypo
trimmato­silphio­paraomelito­katakechymeno­kichl­e-
pi­kossypho­phatto­perister­alektryon­opte­ke
phallio­kinklo­peleio­lagoio­siraio­baphe­tragano­pterygon


Is the officially longest word, the name of a fictional dish mentioned in Aristophanes' comedy Assemblywomen. The original Greek spelling had 171 characters.

In the video below you could see a youngster twisting his tongue,
trying to pronounce some of the longest words in English Language...
He's trying the following words. Repeat after him if you may please...
  1. Taumatawhakatangihangakoauauotamateapoka iwhenuakitanatahu (See the photo on top, the name of a place in Newzealand!)
  2. Pneumonoultramicroscopicsilicovolcanocon iosis
  3. Floccinaucinihilipilification
  4. Mamungkukumpurangkuntjunya Hill
  5. Methionylthreonylthreonyl...isoleucine




Thursday, March 06, 2008

Learning Car driving... Drives Me Crazy...


Learning car driving seems to be an interesting way to get spanked from someone after paying him/ her your hard-earned money! I took up this great decision, when my wife, like for many other, offered support to repay the loan a few months back.

I promptly joined a "Specialised—Advanced" driving school in the town. Worse as it may sound, I decided to take up the early morning slot of 6:00 AM... Half asleep and half awake, I reached the driving school, to be greeted by a lifeless (only till I took to the wheel) driving instructor and a badly beaten car.

Another brave young man joined me for the class. The instructor started with a deluge of instructions on all the basics of car driving for 5 loooooooooooong minutes... then to my own surprise, in my excitement I accepted his challenge (???) and opted to be the first to take the lesson... As I took to the steering-wheel, was surprised and confused at those extra set of brake and clutch at his end...

Now as I started, the instructions began... Change to neutral... hold the brake.... change to first gear.... hold the brake.... release the clutch.... hmmm slowly... slowly... brake... not accelerator... whew.... yeah that's like it.... now third... horn.... brake... now fourth ... slow down... show hand signal... clutch... hold it before you change gears... how many times do I tell you... I slowly started getting used to the atmosphere....

Never did I imagine, that moments later I would be driving on right angles to other vehicles.... my confusion of those extra set of brake/clutch on his end made sense now! The inundation of instructions poured out continually... only that they were at an increasingly irate tone ...

Few days later a day when I felt had driven not too well, and my instructor surprised me by saying I was ready for the practical test. The driving school scheduled the test a few weeks later, I was asked to report at 09:30 am. Stood in a long queue to pay the test fees and got my papers stamped by 11:30 am. I was then asked to go over to the Municipal Ground where the test would commence.

Testing commenced at 02:30 pm. My driving instructor, who constantly showered his "blessings" when I took to wheel, suddenly became helpful and helped me stay at ease before the examiner appeared. Seven of us from the same school appeared for the test. I felt I had messed up (as usual?) while changing gears. But to my surprise, after three gear changes he asked me to pull the vehicle to the side. I did that using the light indicator. When he asked why I did not show the hand signal before stopping, I acted as if am a seasoned driver of an air-conditioned car!

Whew... was I relieved when he asked me to switch off the car and go back to join the co-learners who by now, were more than relieved to have me in the rear than at the wheel...

All of us were equally bad! Three of the seven who appeared didn't make it. [They always maintain that ratio am told!]. Was extremely delighted when I heard that I’d passed on the very first attempt.

Classes gone and with a licence to flash, I now have more experience in car driving than the Hindi film Actor Salman Khan for his decent dressing!!!