Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
One barrel of petroleum holds 42 gallons.
20
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
Pure water (H2O) does not conduct electricity on its own.
46
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9