Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Iron weighs more after it rusts.
68
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The average home creates more pollution than does the average car.
33
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Scientists in Germany have developed a candy that doesn't cause cavities.
11