One barrel of petroleum holds 42 gallons.
20
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
One ragweed plant can release as many as one billion grains of pollen!
51
A cesium atom in an atomic clock beats over nine billion times a second.
43
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
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Pure water (H2O) does not conduct electricity on its own.
46
According to studies, men change their minds two to three times more often than women.
72