The Grand Canyon is an enormous, deep valley. The river which made it is the....

Kilimanjaro is a 6,000-metre mountain which has a dormant volcano. It's the highest point in...

In Namibia, there is an enormous cave called "Dragon's Breath". It holds the world's biggest underground lake. How deep is it?

Brazil is a fantastic place for adventure. You can visit the spetacular falls at Iguazu, or watch the wildlife in the Amazon rainforest, which is bigger than ...

You can surf some of the world's biggest waves in the Atlantic ocean off the beaches of Ireland and Portugal. Which of these is not an ocean?

Beautiful cliffs of ice are home to penguins in...

In the Gobi March, competitors run 250 kilometres through the dunes of the Gobi Desert. The race is part of a four-race desert challenge which also includes the...