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
In zero gravity, a candle's flame is round and blue.
16
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Pure water (H2O) does not conduct electricity on its own.
46
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310