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
Balsa wood is classified as a hard wood!
41
A cesium atom in an atomic clock beats over nine billion times a second.
43
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
One ragweed plant can release as many as one billion grains of pollen!
51
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Each day, up to 150 species of life become extinct.
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