294. Fact

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

295. Fact

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

296. Fact

The earliest cockroach fossils are about 280 million years old.

297. Fact

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

298. Fact

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.

299. Fact

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

300. Fact

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

301. Fact

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

302. Fact

Anticyclones
Winds which blow outward from the center.

303. Fact

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

304. Fact

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

305. Fact

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

306. Fact

Axis
An imaginary line joining north and south poles.

307. Fact

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

308. Fact

Biosphere
Animate or inanimate organic kingdom on earth.

309. Fact

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

310. Fact

Continental shelf
Land adjoining a continent submerged in the sea.

311. Fact

Cyclones
A low pressure system area in which the wind blows spirally inward.

312. Fact

Crop rotation
Growing different crops needing different minerals for their growth in the same piece of land in order to get more yield.

313. Fact

Date line
An imaginary line pointing north-south approximating to the meridian 180 (east or west) where the date changes by one day the moment it is crossed.

Fact
The mythical Scottish town of Brigadoon appears for one day every one hundred years      .. More >>