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
For every gallon of sea water, you get more than a quarter pound of salt.
45
Scientists aren't sure what color dinosaurs were.
312
A cesium atom in an atomic clock beats over nine billion times a second.
43
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Cold water weighs more than hot water.
93
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108