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
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Nearly 50% of the world's scientists are assigned to military projects.
71
Aluminum used to be more valuable than gold!
84
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17