Sound travels about 4 times faster in water than in air.
408
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
The smell of freshly cut grass is actually a plant distress call.
31
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5