When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Pure water (H2O) does not conduct electricity on its own.
46
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
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
A cesium atom in an atomic clock beats over nine billion times a second.
43