For every gallon of sea water, you get more than a quarter pound of salt.
45
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The storage capacity of human brain exceeds 4 Terrabytes.
140
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
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
Iron weighs more after it rusts.
16
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20