0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
A ball of glass will bounce higher than a ball made of rubber.
73
The average home creates more pollution than does the average car.
33
Diamonds can be shattered with a hammer.
-104
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116