Geography

It is one of the least populated areas in the world.

The taiga is home to many large herbivorous mammals.

Lake Superior and the Huron's water levels differ by 25 ft (8 m).

It originates from Gloucestershire and flows into the North Sea.

Niagara Falls from the Canadian side is much more attractive to tourists, as the view faces directly onto the falling cascade on the American side and the Canadian cascade.

Population density in the Sahara is low, at one person per km2.

Malta is the southernmost country in Europe.

The first recorded information about Lake Victoria came from Arab traders who crossed the inland routes in search of gold, ivory, other valuable goods and slaves.

The ancient city of Hierapolis was rediscovered in the 20th century.

Oil and gas production causes serious water and land pollution.