How a Human Cell acts like a Computer - This site is highly technical and dense, but the premise is fascinating and illuminates much about how we define life. Requires a Java-capable browser. You can follow the team's progress online, as they send back daily e-mail postcards and images. You can also participate in several live chat sessions. The text descriptions are a bit dry, as the site is intended for a medical audience, but the images are too cool to miss.
Registration is required, but it's free.
It features QuickTime VR tours of the exhibit hall, classroom activities, and a lot more. The mystery may seem strained to some kids, but the site still offers a wealth of accessible information. The Biotechnology Information Center - A searchable site that contains information on many aspects of agricultural biotechnology. The site also contains bibliographies, including one for educators. This site requires the Shockwave plug-in to view.