By weight, Bone is five times stronger than steel.
417
The US national public health institute, Centers for Disease Control and Prevention, has an actual plan in case of zombie invasion.
29
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
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Shakira has been making music for more than 23 years, can play the guitar, drums, percussion, and harmonica, speaks 7 different languages, is the founder of a charity called Pies Descalzos, and is a goodwill ambassador for UNICEF.
30
There's a rare breed of pig that looks like a sheep.
14