Most dust particles in your house come from dead skin.
48
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
One barrel of petroleum holds 42 gallons.
20
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
The average temperature at 40,000 feet above sea level is -60 F.
56
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