Iron weighs more after it rusts.
68
The average temperature at 40,000 feet above sea level is -60 F.
56
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
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
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
One barrel of petroleum holds 42 gallons.
20
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Sound travels fifteen times faster through steel than through air.
134