0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Balsa wood is classified as a hard wood!
41
According to studies, men change their minds two to three times more often than women.
72
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
A cesium atom in an atomic clock beats over nine billion times a second.
43