Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
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
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108