Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Billions of neutrinos pass unnoticed through your body every second.
6
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The sun is 330,330 times larger than the earth.
75