The earth is approx. 6,588,000,000,000,000,000 tons.
175
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
The average home creates more pollution than does the average car.
33
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
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
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
Your brain is 80% water.
525
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17