Scientists aren't sure what color dinosaurs were.
312
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
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
No matter how cold it gets, gasoline will not freeze.
107
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Pure water (H2O) does not conduct electricity on its own.
46