Created by astrophysicist Richard Powell, An Atlas of the Universe is a Web site that allows visitors to see nine main maps of the universe, ranging from 12.5 light years to 15 billion light years from the sun. Each map...

This webpage is dedicated to all things fractals, and is organized and updated by Professor Paul Bourke. Visitors will find all kinds of useful tools for discovering and learning about fractals including: Fractal forms...

The University of Michigan Museum of Zoology provides the searchable Animal Diversity Web database, with species accounts (images and text) of some of the world's mammals, birds, amphibians, reptiles, sharks, bony...

This impressive source for information about endangered mammals is the result of more than a decade of research by Dr. Paul Massicot, who spent 30 years working at the Maryland Department of Natural Resources. Site...

The National Oceanic and Atmospheric Administration's (NOAA) polar-obriting satellites monitor the ozone levels around the globe. The ozone layer acts to protect life on Earth by blocking harmful ultraviolet rays from...