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
Indoor pollution is 10 times more toxic than outdoor pollution.
62
One barrel of petroleum holds 42 gallons.
20
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16