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.

Comprising the five boroughs of Manhattan, Queens, Brooklyn, the Bronx and Staten Island, New York City is a vibrant metropolis boasting one of the world’s most recognisable skylines. Test your knowledge of America’s most populous city with these multiple choice questions...

The US is the third largest and third most populous country in the world; its geographical and cultural diversity make it a popular destination for tourists. How much do you know about the ‘Land of the Free’..?

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