Science
Chemical Hazards - a pocket guide
FieldGuides: Seashells
Visually pleasing guide to North American species of seashells. Browsable by type;
Inside the Brain: An Interactive Tour
"This tour explains how the brain works and how Alzheimer's affects it.
Making a Bug Collection
Instructions for collecting insects, covering topics such as equipment, where to look for bugs, using relaxing jars, identification and labeling, pinning and spreading, drying, and maintaining the collection.
Science: News
Daily news briefs on science topics from around the world, covering animals, plants, astronomy, health, geology, and many other topics.
WebElements - contains the periodic table which is interactive.
Science Daily - This well-organized site features breaking science news u.
Science Fair Project Resource Guide - A list of sites on how to do a project and an explanation of the scientific method.