Here Are Some Of My Favorite Sites:

Journal Noticias (Portuguese Newspaper)

Science Magazine

Scientific American

For Teachers

Access Excellence

Eisenhower National Clearinghouse

National Science Teacher Association

National Association of Biology Teachers

Best Practices in Education

Biology Sites

The Biology Project

Bugs in the News

DNA From the Beginning

Genetic Science Learning Center

"I Don't Know, Let's Do the Experiment"

Genetic Terms (Glossary)

Mad Scientist Network: Ask a scientist a question!

Online Mendelian Inheritance in Man

The Virtual Cell

Brain Briefings

Neuroscience for Kids

Brain Home page

The Biology Place

DNA Structure and Function

The National Human Genome Institute

Here is a site developed by my science education professor that has a lot of great teaching resources:

Web Site Links at Lehigh University.