Each day, up to 150 species of life become extinct.
-23
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
In zero gravity, a candle's flame is round and blue.
16
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Balsa wood is classified as a hard wood!
41
According to studies, men change their minds two to three times more often than women.
72
Pure water (H2O) does not conduct electricity on its own.
46
Iron weighs more after it rusts.
16