In zero gravity, a candle's flame is round and blue.
16
The smell of freshly cut grass is actually a plant distress call.
31
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
The average temperature at 40,000 feet above sea level is -60 F.
56
The storage capacity of human brain exceeds 4 Terrabytes.
140
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310