• genetics
• ecology
• evolution
• health

Some general links that span subject areas:

• Mayim Bialik (from Blossom and The Big Bang Theory) is also a PhD neuroscientist.  PBS has a series of short interview videos with Mayim about her interest in science and her acting.
• 15 Famous Black scientists in history
• Famous Women Biologists
• Ladies Last: 8 inventions by women that dudes got credit for