Have you ever stopped to wonder how your lifestyle impacts the planet we're living on? This basic questionnaire will calculate a quick and relatively accurate Ecological Footprint for an individual living in North America.
Virtual Knee Surgery
Perform a virtual knee replacement! In this guided virtual surgery you will
use tools such as the scalpel and bone saw. You can also view photos from a
real knee surgery.
Astrobiology Institute
Could there be life elsewhere in the universe? Explore this fascinating
question with online adventures, getting your questions answered online in
the "Ask a Biologist" section, and more! This site is by the NASA
Astrobiology Institute.
The Genographic
Project: Human Migration
This site from the National Geographic Society is a five-year effort to
understand the human journey—where we came from and how we got to where we
live today. It will "map humanity’s genetic journey through the ages."