There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The smell of freshly cut grass is actually a plant distress call.
31
The average temperature at 40,000 feet above sea level is -60 F.
56
Aluminum used to be more valuable than gold!
84
In zero gravity, a candle's flame is round and blue.
16
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Indoor pollution is 10 times more toxic than outdoor pollution.
62