In zero gravity, a candle's flame is round and blue.
16
The bark of an older redwood tree is fireproof.
65
The average temperature at 40,000 feet above sea level is -60 F.
56
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Sound travels about 4 times faster in water than in air.
408
4.5 pounds of sunlight strike the Earth each day.
27
A cubic yard of air weighs about 2 pounds at sea level.
31
The storage capacity of human brain exceeds 4 Terrabytes.
140