Be dazzled as a Scientific American editor explains Dark Matter with nothing but junk laying around his office.
November 16, 2007
Dark matter is weird stuff - you can't see it or touch it, yet it's all around us. And it's literally holding the galaxy together. Come along as Scientific American editor George Musser explains what it's all about -- in about a minute and a half, using nothing but stuff he has in his office - not a trivial feat!