The average temperature at 40,000 feet above sea level is -60 F.
56
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
One third of the electricity produced on earth is used to power electric light bulbs!
75
Sound at the right vibration can bore holes through a solid object.
134
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
One ragweed plant can release as many as one billion grains of pollen!
51