When Niall Treacy skidded out of the men's 500m heats on Monday, Great Britain's hopes in the short track speed skating were finally put out of their misery.

Relive day eight of the Winter Olympics as Great Britain's Kirsty Muir reaches the freestyle skiing big air final.

Thanks to data collected by satellites, scientists have a good understanding of Antarctica's icy surface, but what lies beneath has remained more of a mystery. In fact, more is known about the surface ...