One of my absolute favorite people to follow on twitter is the astrophysicist Neil deGrasse Tyson. This tweet alone made him into my top ten. Anyway, a few weeks ago he tweeted a link to a youtube channel called Minute Physics, which features little one minute illustrated science lessons. Like Tyson and my hero Carl Sagan, the channel makes science approachable without dumbing it down. It's fun, but you definitely walk away knowing something you didn't know before. This video here is probably my favorite (it has cats in it, duh.) but I highly recommend clicking over to their channel and watching every video they've uploaded!