Smithsonian Institution
Smithsonian Learning Lab: Under the Spell Of...spiders!
Learn about their unique characteristics, how they hunt, and reproduce. Young scholars will appreciate the excellent photographs and background information. Teachers will love the series of three lesson plans about spiders, complete with...
How Stuff Works
How Stuff Works: Spiders
Basic facts about spiders, with links to related topics, photos and videos.
Australian Broadcasting Corporation
Australian Broadcasting Corporation: News in Science: Secrets of Spider Silk Unravelled
From ABC News in Science, Jennifer Viegas's article explores the various uses spiders employ for their silk. As a primary base, the article focuses on the Black Widow spider.
Other
Ed Nieuwenhuys' Spiders & Immunology: Spider Silk
An informative site on the properties of spider silk, including its surprising strength and how it's produced.