American Institute of Biological Sciences
Action Bioscience: Biodiversity
This site from the American Institute of Biological Sciences contains articles on a wide array of issues related to species diversity and extinction. Many articles available in Spanish.
PBS
Nh Pbs: Nature Works: Species Diversity
If your wondering about the biodiversity of species on Earth, then check out Natureworks from New Hampshire Public Television. A brief definition is included as well as some interesting facts on species diversity.
Other
Biodiversity Project
Formed in 1995, the "Biodiversity Project," was created to raise awareness and educate the public on the connection between biodiversity and everyday life. General biodiversity questions are answered in the "What is biodiversity?,"...