Scientists aren't sure what color dinosaurs were.
312
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Cold water weighs more than hot water.
93
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Pumice is the only rock that floats on water.
14
One cubic foot of gold weighs more than 1,200 pounds!
78