Balsa wood is classified as a hard wood!
41
Billions of neutrinos pass unnoticed through your body every second.
6
The average home creates more pollution than does the average car.
33
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Nylon is made from coal and petroleum.
42
Aluminum used to be more valuable than gold!
84
Each day, up to 150 species of life become extinct.
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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