Famed for its beautiful beaches, its barbecues and the casual charm of its people, how much do you know about planet Earth’s sixth largest country?

Two minutes. Twenty capital cities. Identify the country to which each capital belongs.

It's estimated that more than 80% of the Earth's surface is volcanic in origin. Test your knowledge of volcanoes with these multiple choice questions.

How much do you know about the world’s lakes? Find out with these multiple choice questions...