Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Pumice is the only rock that floats on water.
14
Nearly 50% of the world's scientists are assigned to military projects.
71
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
For every gallon of sea water, you get more than a quarter pound of salt.
45
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