Sound travels fifteen times faster through steel than through air.
134
A cubic yard of air weighs about 2 pounds at sea level.
31
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
A cesium atom in an atomic clock beats over nine billion times a second.
43
Research indicates that plants grow healthier when they are stroked.
173
Your brain is 80% water.
525
Each day, up to 150 species of life become extinct.
-23
A ball of glass will bounce higher than a ball made of rubber.
73