Hot water can freeze faster than cold water.
181
In zero gravity, a candle's flame is round and blue.
16
Scientists aren't sure what color dinosaurs were.
312
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
One barrel of petroleum holds 42 gallons.
20
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38