One third of the electricity produced on earth is used to power electric light bulbs!
75
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
Sound at the right vibration can bore holes through a solid object.
134
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51