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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The smell of freshly cut grass is actually a plant distress call.
31
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
A cubic yard of air weighs about 2 pounds at sea level.
31