1783 an Icelandic eruption threw up enough
dust to temporarily block out the sun
About 20 to 30 volcanoes erupt each
year, mostly under the sea.
A huge underground river runs underneath
the Nile, with six times more water
than the river above.
Lake Bosumtwi in Ghana formed in a
hollow made by a meteorite.
Beaver Lake, in Yellowstone Park, USA,
was artificially created by beaver damming.
Off the coast of Florida there is an
underwater hotel. Guests have to dive
to the entrance.
Venice in Italy is built on 118 sea
islets joined by 400 bridges. It is
gradually sinking into the water.
The Ancient Egyptians worshipped a
sky goddess called Nut.
The world's windiest place is Commonwealth
In 1934, a gust of wind reached 371
km/h on Mount Washington in New Hampshire,
American Roy Sullivan has been struck
by lighting a record seven times.
The desert baobab tree can store up
to 1000 litres of water in its trunk.
The oldest living tree is a California
bristlecone pine name 'Methuselah'.
It is about 4600 years old. The largest
tree in the world is a giant sequoia
growing in California. It is 84 meters
tall and measures 29 meters round the
trunk. The fastest growing tree is the
eucalyptus. It can grow 10 meters a
The Antartic notothenia fish has a
protein in its blood that acts like
antifreeze and stops the fish freezing
in icy sea.
The USA uses 29% of the world's petrol
and 33% of the world's electricity.
The industrial complex of Cubatao in
Brazil is known as the Valley of Death
because its pollution has destroyed
the trees and rivers nearby.
Tibet is the highest country in the
world. Its average height above sea
level is 4500 meters.
Some of the oldest mountains in the
world are the Highlands in Scotland.
They are estimated to be about 400 million
Fresh water from the River Amazon can
be found up to 180 km out to sea.
The White Sea, in Russia, has the lowest
temperature, only -2 degrees centigrade.
The Persian Gulf is the warmest sea.
In the summer its temperature reaches
35.6 degrees centigrade.
There is no land at all at the North
Pole, only ice on top of sea. The Arctic
Ocean has about 12 million sq km of
floating ice and has the coldest winter
temperature of -34 degrees centigrade.
The Antarctic ice sheet is 3-4 km thick,
covers 13 million sq km and has temperatures
as low as -70 degrees centigrade.
Over 4 million cars in Brazil are now
running on gasohol instead of petrol.
Gasohol is a fuel made from sugar cane.