Diamonds can be shattered with a hammer.
-104
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
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
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
A cubic yard of air weighs about 2 pounds at sea level.
31
Scientists are now able to grow 'beating' heart tissue in a lab!
162