Sound travels about 4 times faster in water than in air.
408
The sun is 330,330 times larger than the earth.
75
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
One ragweed plant can release as many as one billion grains of pollen!
51