Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
The bark of an older redwood tree is fireproof.
65
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Pure water (H2O) does not conduct electricity on its own.
46
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
One barrel of petroleum holds 42 gallons.
20
Indoor pollution is 10 times more toxic than outdoor pollution.
62