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 gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
In zero gravity, a candle's flame is round and blue.
16
Out of all the senses, smell is most closely linked to memory.
146
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
One barrel of petroleum holds 42 gallons.
20
Research indicates that plants grow healthier when they are stroked.
173