NASA for middle-school students http://www.nasa.gov/audience/forstudents/5-8/features/index.html
National Geographic for Kids http://www.nationalgeographic.com/kids/
Science Research Links http://www.newpaltz.k12.ny.us/local/high_school/Teachers/kulrich/Link%20stuff/The%20Link%20Page.htm#Research%20Links:
Extraneous http://www.mrulrichslandofbiology.com/
The Why Files - Science Behind the News http://whyfiles.org/index.php
How Stuff Works http://www.howstuffworks.com/
My blog about my cross country cycling adventure - Summer 2007 http://crosscountrybybike.blogspot.com