The smell of freshly cut grass is actually a plant distress call.
31
Your brain is 80% water.
525
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
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20