A ball of glass will bounce higher than a ball made of rubber.
73
Aluminum used to be more valuable than gold!
84
4.5 pounds of sunlight strike the Earth each day.
27
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
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
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
Iron weighs more after it rusts.
16
The left ear is more responsive to words of love and emotion whispered into it than the right.
40