Sound travels about 4 times faster in water than in air.
408
The smell of freshly cut grass is actually a plant distress call.
31
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Each day, up to 150 species of life become extinct.
-23
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
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
Liquid TIDE laundry detergent glows under a blacklight.
96