The smell of freshly cut grass is actually a plant distress call.
31
One cubic foot of gold weighs more than 1,200 pounds!
78
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Aluminum used to be more valuable than gold!
84
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20