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
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
A ball of glass will bounce higher than a ball made of rubber.
73
Aluminum used to be more valuable than gold!
84
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
In zero gravity, a candle's flame is round and blue.
16
The smell of freshly cut grass is actually a plant distress call.
31