The Adventures of Science Bob

Animal Planet

Boston Museum of Science

Brain Pop

Celestia: A 3D Space Simulation

Cells Alive

Chem4Kids

Cool Science for Curious Kids

CyberFair: The Virtual Science Fair

Dr. Bob's Interesting Science Stuff

eNature.com
Online versions of the Audubon field guides with over 4800 plants and animals

Exploratorium
A collection of electronic exhibits and resources for teachers, students, and science enthusiasts

ExploreScience.com

Extreme Science
A site dealing with scientific records and including links to related sites

Great Inventors and Innovators

MadSci Network

Science: The Body (BBC)

Science: The Body - Senses Challenge

Science Fair Central

Science Fair Resource Guide

The Science Spot

TryScience

Virtual Field Trips: Science

The Yuckiest Site on the Internet

Why Files

World of Scientific Biography
A comprehensive online encyclopedia of famous scientists in history