It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
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
The earth is approx. 6,588,000,000,000,000,000 tons.
175
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13