One 75-watt bulb gives more light than three 25-watt bulbs.
57
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
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
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
According to studies, men change their minds two to three times more often than women.
72
