PRENTICE HALL BIOLOGY 



NASA Earth Observatory
Visit NASA's Earth Observatory, where you can monitor regional and global changes on our planet almost as they happen. Here you can explore with NASA scientists the causes and effects of climatic and environmental change through the use of real satellite data.

The MAD Scientist Network
Welcome to the laboratory that never sleeps! The MAD Scientist Network is a global collection of scientists answering your questions. For good measure, they provide a variety of oddities and other ends as well. Browse thousands of questions and answers in the MadSci Archives, locate information with their search engine or with the Random Knowledge Generator, have fun with science MAD Labs, or browse the MadSci Library to find science resources on the Web.

Pitsco's Ask an Expert: Science/Technology
This site is a directory of links made up of 12 categories with over 300 Web sites and email addresses where you can find experts to answer your questions.

Ask Dr. Universe
Why don't spiders stick to their own webs? Why can't we grow more brain cells? You can ask Dr. W.S. Universe just about anything. This award-winning site uses Washington State University's great team of researchers for information. Dr. Universe will follow them into the field, or into the laboratory or library, to find your answers.

The World Wide Web Virtual Library: Biosciences
Institutions around the world have banded together to construct this "virtual library" of information. At this site, you will find the master index of biological sciences. It is a good starting place for a science teacher or student to explore biology topics on the Web.

The Electronic Zoo
Perhaps the best and most comprehensive animal site on the Web is this one from Washington University. It contains hundreds of animal-related links, as well as electronic journals, newsgroups, and mailing lists. There's also an impressively large collection of animal pictures and sounds.

The UC Berkeley Museum of Natural History
Take a virtual tour of the evolution section of Berkeley's Museum of Natural History. Full-color images of some of their most famous specimens are included, as well as a review of the important elements of evolutionary theory. The evolutionary time line provides a great overview of important thinkers in evolution during the last 300 years.