This section of the Windows to the Universe web site provides information and images about Earth's atmosphere including detailed information about the layers of Earth's atmosphere, the greenhouse effect, and weather....

The Environmental Institute at the University of Massachusetts-Amherst encourages and supports "collaboration across colleges and disciplines in environmental research and education." On the left-hand side of the page,...

Today, in the deepest part of the Grand Canyon, the Colorado River flows past rocks that are 1.7 billion years old. This video describes how the river cut vertically through layers of pre-existing rock as the plateau...

Created by the Harvard Smithsonian Center for Astrophysics in association with the Harvard University Center for the Environment, this 13-part program includes an overview of the Earth's systems along with an exploration...

For students of the geophysical sciences and policy makers, this very helpful document will be a most valuable reference tool. Written by Lynn M. Highland of the United States Geological Survey with Peter Bobrowsky of...