Nearly 50% of the world's scientists are assigned to military projects.
71
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Diamonds can be shattered with a hammer.
-104
If the chemical sodium is dropped into water it will immediately and violently explode.
67
One cubic foot of gold weighs more than 1,200 pounds!
78