Former SPINSANITY contributor Brendan Nyhan points out a very good essay from Jon Chait [registration required; use bugmenot] regarding the arbitrariness of defining politicians by “flip-flops”, and makes a few good points on the subject on his own.
Solaris
Click this to see a short quicktime clip of Earth’s moon passing in front of the sun, as recorded by two of NASA’s spacecraft dedicated to observing the sun.
It’ll take a minute for the clip to load because of its size, but wait for it. It’s worth it.