NASA
Nasa: Planet Quest: Extreme Planet Makeover
Activity in which students create a planet based on distance from a star, age, size, and star type. The created planet is evaluated to determine if it can support life.
Earth Life
Earth Life: Locomotion of Mammals
Good site for some general information on the movement of mammals. Gives a description and gives the average speed of a variety of animals.
Other
Carbon 14 Dating
Seven pages all about Carbon 14 Dating. Information on half-life, Carbon 14 used to date specimens and artifacts, limitations, charts and graphs. Michael E. Brown Ph.D. contests that the limitations of Carbon 14 dating support the theory...