According to studies, men change their minds two to three times more often than women.
72
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The average temperature at 40,000 feet above sea level is -60 F.
56
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
One 75-watt bulb gives more light than three 25-watt bulbs.
57
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
The smell of freshly cut grass is actually a plant distress call.
31
Pure water (H2O) does not conduct electricity on its own.
46