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
Iron weighs more after it rusts.
68
Out of all the senses, smell is most closely linked to memory.
146
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Sound travels about 4 times faster in water than in air.
408
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21