Cold water weighs more than hot water.
93
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 storage capacity of human brain exceeds 4 Terrabytes.
140
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
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
Pumice is the only rock that floats on water.
14
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75