Sound travels fifteen times faster through steel than through air.
134
Each day, up to 150 species of life become extinct.
-23
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The smell of freshly cut grass is actually a plant distress call.
31
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
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