Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The earth is approx. 6,588,000,000,000,000,000 tons.
175
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 is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Scientists aren't sure what color dinosaurs were.
312
Brass doorknobs automatically disinfect themselves in about 8 hours.
18