Originally a solution to the space problem, skyscrapers have come to symbolise ambition and transcendence. See how much you know about these iconic buildings.

Various scales and charts have been developed to measure everything from the pungency of peppers to the intensity of earthquakes. Test your knowledge of some of them with these multiple choice questions...

The International Space Station is a modular space station put into orbit around Earth in November, 1998. How much do you know about this fascinating space laboratory?

Charles ‘Chuck’ Yeager was an American Air Force Officer and test pilot known for his historic breaking of the sound barrier in 1947. Test your knowledge of this supersonic flight pioneer with these multiple choice questions...