An extensive examination of the Antiquities Act, first signed by President Theodore Roosevelt in 1906. Read how fifteen presidents have used this act to protect both sites of historic and scientific interest. Included are photographs of...

This museum article provides fifteen thumbnail images of Albert Bierstadt's paintings are available for enlarging, with biographical information on a separate page.

Two page introduction to the state of matter. Good site!

This resource compares the environmental benefits of pollution control to the costs incurred by industry, taxpayers, and consumers.