While the world's attention has been on Greenland, should Antarctica also be in the geopolitical spotlight?

The US has been withdrawing its influence over the continent, allowing Russia and China to expand their presence.

Meanwhile, Antarctica's vast ice sheets keep melting and its research community is in a battle against time to understand why it's happening so quickly.

Sky's science editor Tom Clarke speaks to Niall about his recent trip to the seventh continent.

Producers: Natalie Ktena & Tom Gillespie

Editor: Mike Bovill