Watch a bunch of avid chemists talk about--and demonstrate--some of their favorite elements at The Periodic Table of Videos.

Here's Theodore Gray's gorgeous Periodic Table site.

The Harvard Natural Sciences Lecture Demonstrations site has videos of cool sciency things like exploding garbage cans and beautiful waves produced by pendulums (pendula?).

Make Magazine, how to make just about anything from just about anything else.

More stuff to make at Instructables.

If you want to know how stuff works, this is the go-to site.

For the science behind the news, check out The Why Files.

More fun stuff coming soon. Stay tuned...