One 75-watt bulb gives more light than three 25-watt bulbs.
57
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
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
Scientists aren't sure what color dinosaurs were.
312
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
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57