Happyfeet
Friday, April 20, 2007
What Are Greenhouse Gases?
Many chemical compounds found in the Earth’s atmosphere act as “greenhouse gases.” These gases allow sunlight to enter the atmosphere freely. When sunlight strikes the Earth’s surface, some of it is reflected back towards space as infrared radiation (heat). Greenhouse gases absorb this infrared radiation and trap the heat in the atmosphere. Over time, the amount of energy sent from the sun to the Earth’s surface should be about the same as the amount of energy radiated back into space, leaving the temperature of the Earth’s surface roughly constant.Many gases exhibit these “greenhouse” properties. Some of them occur in nature (water vapor, carbon dioxide, methane, and nitrous oxide), while others are exclusively human-made (like gases used for aerosols).
click here
http://www.ghgonline.org/
http://www.umich.edu/~gs265/society/greenhouse.htm
http://www.ec.gc.ca/pdb/ghg/ghg_home_e.cfm
http://www.pbs.org/wgbh/nova/ice/greenhouse.html
Thursday, April 19, 2007
A LOOK AHEAD: THE USA IN 2100
LOSING LAND TO THE SEA
Wednesday, April 18, 2007
Tuesday, April 17, 2007
Climate change threatens security, UK tells UN
· Council debates 'weather of mass destruction'
· US claims other factors more important for peace
Andrew Clark in New York
Wednesday April 18, 2007
The Guardian
Britain has warned reluctant members of the United Nations that there are few greater threats to global security than climate change, delivering a stark message forecasting armed conflicts over scarce supplies of food, water and land.
On a trip to New York, the foreign secretary, Margaret Beckett, chaired the security council's first debate on global warming. It was convened despite criticism from countries such as India and China which argue that the issue is outside the security council's mandate of maintaining international peace.
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· US claims other factors more important for peace
Andrew Clark in New York
Wednesday April 18, 2007
The Guardian
Britain has warned reluctant members of the United Nations that there are few greater threats to global security than climate change, delivering a stark message forecasting armed conflicts over scarce supplies of food, water and land.
On a trip to New York, the foreign secretary, Margaret Beckett, chaired the security council's first debate on global warming. It was convened despite criticism from countries such as India and China which argue that the issue is outside the security council's mandate of maintaining international peace.
click here
