According to studies, men change their minds two to three times more often than women.
72
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
A cubic yard of air weighs about 2 pounds at sea level.
31
No matter how cold it gets, gasoline will not freeze.
107
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Sound travels about 4 times faster in water than in air.
408
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310