Did you know that Alexander Grahm Bell set a world water speed record?

Sterling silver contains 7.5% copper.

Cars were first made with ignition keys in 1949.

J.B Dunlop was first to put air into tires.

Alexander Graham Bell, who invented the telephone, also set a world water-speed record of over seventy miles an hour at the age of seventy two.

It is energy-efficient to turn off a fluorescent light only if it will not be used again within an hour or more. This is because of the high voltage needed to turn it on, and the shortened life this high voltage causes.

The Earth's equatorial circumference (40,075 km) is greater than its polar circumference (40,008 km).

Lake Baikal is the deepest lake in the world.
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.

The Earth's average velocity orbiting the sun is 107,220 km per hour.
There is a high and low tide because of our moon and the Sun.