Canadian astronaut and Commander of Expedition 35 demonstrates how astronauts brush their teeth in space. You might be surprised by what he reveals! [Canadian Space Agency | Via IHC]

Scientists trying to unlock the mysteries of antimatter say they’ve spotted extremely preliminary signs that one theory about the make up of space may be correct. The findings come in an article in Physical Review Letters and detail the first results from the Alpha Magnetic Spectrometer (AMS), a device housed on the International Space Station. […]

What is the maximum height for a mountain on Earth!? And why? [MinuteEarth]

A little more dramatic than that video I posted a while ago of Bill Nye explaining how quicksand works. Is it possible to survive being stuck in quicksand? Jonny Phillips risks life and limb to experience firsthand what it is like to slowly sink into quicksand—just a few feet away from an incoming tide. [NationalGeographic]

Where does that extra square of chocolate come from? Try to come up with an explanation, and when you think you’ve figured it out, hit this link. [Via]

http://youtu.be/Ke-IJfoy7-Y It costs billions of dollars to produce just a few atoms of the stuff, but here are 10 other things you might not know about antimatter. [AllTime10s]

http://youtu.be/89GJWHYNScE Catch some rays of knowledge with these 10 amazing facts about the sun. [AllTime10s]