The earth is like a greenhouse. The mixture
of gases in the earth's atmosphere, called Greenhouse
Gases (GHG), traps the sun's heat near the surface of the earth,
helping to provide a life support environment for the planet. Over
thousands of years, the level of GHG in the atmosphere has changed
very little. However, the increasing GHG emissions from human activities,
in the last one and a half centuries, appear to be breaking this
balance.
Read more about Stress to the Atmosphere
|