I found this diatom photo in Russ Crutcher’s MicrolabNW Photomicrograph gallery. Diatoms are a type of algae; there’s a good Wikipedia article about them here.
The National Library of Medicine has put together a great companion website for its Dream Anatomy exhibit. Don’t miss the Learning Station; there are online activities and lesson plans for teachers.
How did I never hear of this before? Here’s a great article in Science magazine about the AAAS/Science Dance Your PhD contest. The winner above was presenting “The role of vitamin D in beta cell function.”
Here’s a gorgeous image from NASA’s Astronomy Picture of the Day, February 26th. Next to the crescent Moon (illuminated by Earthshine), from top to bottom, you see Mercury, Jupiter, and Mars.
National Geographic is the place to go for incredible photography - I love this set of photos of see-through critters, like this cowfish.