The smell of freshly cut grass is actually a plant distress call.
31
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
No matter how cold it gets, gasoline will not freeze.
107
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0