Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Hot water can freeze faster than cold water.
181
Pure water (H2O) does not conduct electricity on its own.
46
In zero gravity, a candle's flame is round and blue.
16
Pumice is the only rock that floats on water.
14
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Iron weighs more after it rusts.
68
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3