A cubic yard of air weighs about 2 pounds at sea level.
31
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
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
Hot water can freeze faster than cold water.
181
Liquid TIDE laundry detergent glows under a blacklight.
96
Aluminum used to be more valuable than gold!
84
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
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