A cubic yard of air weighs about 2 pounds at sea level.
31
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Research indicates that plants grow healthier when they are stroked.
173
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
A cesium atom in an atomic clock beats over nine billion times a second.
43