Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists are now able to grow 'beating' heart tissue in a lab!
162
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Most dust particles in your house are made from dead skin!
67
Billions of neutrinos pass unnoticed through your body every second.
6