Near-Earth Asteroid Tracking
Information about asteroids and comets hitting the earth.

6 Billion Human Beings
An interactive museum exhibit on human population growth.

Population and Demographics
Links to many web sites related to human population growth.

National Marine Fisheries Service Northwest Regional Office
A source of information on pacific fish populations. One of the fact sheets available here summarizes a study of the Chinook salmon population.

WHO Guide to Good Prescribing
Information about pharmacological practice, particularly optimal drug dosage.