Tree Identification from MSU Extension Service - gives several places to start in identifying species. Specifically designed for Michigan's Upper Peninsula but useful for others, too. Scientist have used CT scan to gain information about her DNA, possible links to living relatives, as well as details of her death that provide new insights into Incan ritual and religion. The Visible Embryo - Follow the development of a human embryo from fertilization to birth. Whales on the Net - from Australia, virtual dives, a photo gallery, whale research and current issues, and links to other whale sites.
Students can also track asteroids or comets.