For every gallon of sea water, you get more than a quarter pound of salt.
45
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Pumice is the only rock that floats on water.
14