Pumice is the only rock that floats on water.
14
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
One 75-watt bulb gives more light than three 25-watt bulbs.
57
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
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
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13