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
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Most dust particles in your house are made from dead skin!
67
