Nearly 50% of the world's scientists are assigned to military projects.
71
Research indicates that plants grow healthier when they are stroked.
173
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Iron weighs more after it rusts.
16
Nylon is made from coal and petroleum.
42
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Scientists aren't sure what color dinosaurs were.
312
One cubic foot of gold weighs more than 1,200 pounds!
78