Now you Know

Nearly a third of all bottled drinking water purchased in the us is contaminated with bacteria.

Rats multiply so quickly that in 18 months, two rats could have over 1 million descendents.

An astronaut can be up to 2 inches taller returning from space. The cartilage disks in the spine expand in the absence of gravity.

The oldest known fossil is of a single-celled organism, blue-green algae, found in 3.2 billion year-old stones in south africa.

The oldest multicellular fossils date from ~700 million years ago.

The earliest cockroach fossils are about 280 million years old.

Healthy nails grow about 2 cm each year. Fingernails grow four times as fast as toenails.

20/20 vision means the eye can see normally at 20 feet. 20/15 is better; the eye can see at 20 feet what another eye sees at 15 feet.

The average person has 100,000 hairs on his/her head. Each hair grows about 5 inches (12.7 cm) every year.

There are 60,000 miles (97,000 km) in blood vessels in every human.

Antipodes
A region or place on the opposite side of a point on the earth.

Anticyclones
Winds which blow outward from the center.

Aphelion
Position of the earth in its orbit when is at the maximum distance from the sun.

Archipelago
A cluster of islands, e.g., pearl islands in the gulf of panama.

Atoll
Coral reef resembling a horse shoe, enclosing a lagoon.

Axis
An imaginary line joining north and south poles.

Avalanche
A vast mass of snow mixed with earth or stones.

Biosphere
Animate or inanimate organic kingdom on earth.

Canyon
A deep valley cut by a river through a mountain region, e,g., the grand canyon of the colarado river in the usa.

Continental shelf
Land adjoining a continent submerged in the sea.

Fact
The word "amateur" comes from the same spelled french word for "lover" and "is anyone interested?" .. More >>