Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Pumice is the only rock that floats on water.
14
Cold water weighs more than hot water.
93
Nearly 50% of the world's scientists are assigned to military projects.
71
One third of the electricity produced on earth is used to power electric light bulbs!
75