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 than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
4.5 pounds of sunlight strike the Earth each day.
27
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Pumice is the only rock that floats on water.
14
One barrel of petroleum holds 42 gallons.
20
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118