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
Hot water can freeze faster than cold water.
181
Pure water (H2O) does not conduct electricity on its own.
46
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Your brain is 80% water.
525
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
German chemists made a replica of a trophy the size of one molecule.
68