When Charles Darwin first discovered the Galapagos Tortoises, he tried to ride them!
18
Sound travels about 4 times faster in water than in air.
408
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists say that a 'zombie apocalypse' is actually possible based on the recent discovery of certain brain parasites. But as of now, these parasites only affect bugs.
16
If two pieces of metal touch in space, they become permanently stuck together.
808
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6