Sound travels fifteen times faster through steel than through air.
134
If the chemical sodium is dropped into water it will immediately and violently explode.
67
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
Nearly 50% of the world's scientists are assigned to military projects.
71
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
4.5 pounds of sunlight strike the Earth each day.
27
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Pure water (H2O) does not conduct electricity on its own.
46