Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Nearly 50% of the world's scientists are assigned to military projects.
71
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Iron weighs more after it rusts.
16
The average home creates more pollution than does the average car.
33
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Most dust particles in your house come from dead skin.
48