A cubic yard of air weighs about 2 pounds at sea level.
31
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Cold water weighs more than hot water.
93