Via Financial Times, Robert Mathews draws our attention to a startling new discovery which is a must-read in the debate about the environment. He writes:
Everyone knows trees are "A Good Thing". They take in the carbon dioxide that threatens our planet with global warming and turn it into fresh, clean oxygen for us all to breathe.
But now it seems we need to think again. In a discovery that has left climate scientists gasping, researchers have found that the earth's vegetation is churning out vast quantities of methane, a greenhouse gas far more potent even than CO2. This is not a product of trees and plants rotting, which everyone already knew was a source of methane; it is an entirely natural side-effect of plant growth that scientists had somehow missed. Yet it is by no means trivial: preliminary estimates suggest that living trees and plants account for about 10 to 30 per cent of the methane entering the atmosphere.
While no one is suggesting chopping down the world's trees to save the planet, the new research highlights the astonishing complexity of environmental science. Measures to combat climate change that once seemed simple common sense are turning out to be anything but.
Everyone knows fossil fuel power stations are hefty producers of CO2 and need urgently to be replaced. Yet they are now also recognised as hefty producers of aerosols - tiny particles in the atmosphere that play a key role in reflecting the sun's heat back into space. The scientific consensus was that this is a minor benefit of fossil fuel burning. But last month Nature published new research showing aerosols may be twice as effective at keeping the earth cool as was thought. Suddenly, wholesale closure of power stations no longer seems such a good idea.
Climate scientists would have us believe there is no doubt about the basics of global warming and the time for action is now. The recent spate of large revisions of the facts tells a different story. Yet politicians are still being pressed to do the impossible: modify the huge, chaotic system that is the earth's climate in ways guaranteed to be beneficial for all.
Friday, January 13, 2006
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1 comment:
It doesnt matter what discoveries climate or enivornmental studies make.
A person standing near a busy traffic road either in Mumbai or Chennai would immediately tell you that pollution is harmful. This is what matters.It is such plain commonsense!
Mindlessly bringing in polluting industries in the name of liberalization is not good for India.
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