Sound travels about 4 times faster in water than in air.
408
The sun is 330,330 times larger than the earth.
75
For every gallon of sea water, you get more than a quarter pound of salt.
45
Pumice is the only rock that floats on water.
14
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Most dust particles in your house come from dead skin.
48
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18