A complete biography of Elsasser's life and contributions to both biological science and earth science. Page also contains a photo of Elsasser. Site includes biographies of other famous scientists as well.

Links to many video-clip based lessons in the areas of health, English language arts & drama, mathematics, music, biology, earth science, inventions, astronomy, physics, chemistry, U.S. history and culture, and world history and...

The aim of this article relates the nature of science to our current understanding of the origin of life and describe the formation of the atoms which build the Earth and its life.