The average temperature at 40,000 feet above sea level is -60 F.
56
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 cesium atom in an atomic clock beats over nine billion times a second.
43
Out of all the senses, smell is most closely linked to memory.
146
Nylon is made from coal and petroleum.
42
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117