Founded in 1978, the American Council on Science and Health (ACSH) is an education consortium that is primarily concerned with "issues related to food, nutrition, chemicals, pharmaceuticals, lifestyle, the environment...

The American Dental Education Association (ADEA) has over 19,000 members, including students, faculty, staff, and administrators from across the United States and Canada. One of the Association's stated goals is to...

This reference consists of an interactive periodic chart that provides information for most of the elements. Clicking on an element's symbol on the chart accesses the element's name, discoverer and date of discovery, as...

This collection of approximately 4,500 photographs documents natural environments, ecologies, and plant communities in the United States at the end of the nineteenth and the beginning of the twentieth century. Produced...

In late 1969, Wisconsin Senator Gaylord Nelson hired Denis Hayes to organize a national teach-in day about the importance of protecting the environment for future generations. On April 22, 1970, the first Earth Day was...