By weight, Bone is five times stronger than steel.
417
Sweden is so good at recycling, it has run out of garbage and now must import garbage from Norway to fuel its energy programs.
20
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
While filming a guest appearance on Star Trek TNG, Stephen Hawking was taken on a tour of the USS Enterprise set. When he saw the Warp Core, he paused, and said “I’m working on that.”
11
The first foreigner to become a samurai was an African slave.
26