In zero gravity, a candle's flame is round and blue.
16
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
German chemists made a replica of a trophy the size of one molecule.
68
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Each day, up to 150 species of life become extinct.
-23
Most dust particles in your house come from dead skin.
48
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89