When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
A cubic yard of air weighs about 2 pounds at sea level.
31
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
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51