Greenhouse
effect

More links about the greenhouse effect:

An overview of the greenhouse effect ...
as part of 'Living Landscapes' provided by Okanagan University College (Canada)

Have you ever seen a greenhouse?
Information on the EPA Kids page (see also -> Kids)

A little article without numbers ...
one page about the greenhouse effect from PBS online

Aspects of the greenhouse effect ...
Described in a bit older text version by authors for the Australian Academy of Science