You can see that things gradually become more terrifying : Five of the six alkali metals and their reactions to air and water. Learn more at the Periodic Table Of Videos. Lithium, Sodium, Potassium, Rubidium, Cesium (Caesium), and the elusive Francium.
posted by The Whelk on Nov 18, 2009 - 29 comments

Freethought Multimedia contains dozens of interviews, conversations and lectures on a variety of topics with/by several contemporary skeptics and freethinkers, including Michael Shermer, James Randi, Daniel Dennett, Steven Pinker and Richard Dawkins. (There's a great links section at the bottom of the page, as well. Particularly good are the University Lectures section and the Lectures Archive.)
posted by cog_nate on Nov 16, 2007 - 21 comments

Coffee + laser = instant awesome!
posted by loquacious on Mar 26, 2007 - 59 comments

Have you ever wondered what a solar eclipse would look like from space? The STEREO (Solar TErrestrial RElations Observatory) has just sent back its view (awe-inspiring video included). It has also sent back some gorgeous pictures of our sun (and the McNaught Comet). For more media, check out the other galleries (including some 3D images). For more about the project, see NASA's STEREO homepage. Be sure to also stop by the Johns Hopkins University STEREO Page, where you can download a mission guide (pdf), view animations, watch a video of the launch, or even make your own papercraft STEREO model (pdf). You can also learn more in six minute segments with their series of short educational videos.
posted by wander on Mar 13, 2007 - 15 comments

Please now enjoy this ginormous gallery of slow motion videos from a high speed digital camera.
posted by loquacious on Jan 31, 2007 - 39 comments

Liquid Nitrogen bomb! A ship floating on invisible hexaflourid gas! Smoking can kill you and weld metal! Nuclear Chain reaction... with balls! Detonating gas in a can!! Water flowing uphill! 100,000,000 volts and a Faraday cage! And more from Physikshow at University of Bonn.
posted by loquacious on Jan 11, 2007 - 29 comments