The bark of an older redwood tree is fireproof.
65
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
Billions of neutrinos pass unnoticed through your body every second.
6
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
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
Iron weighs more after it rusts.
68
Your brain is 80% water.
525