Ski Sunday: How climate change is affecting French glaciers and winter sport

Four-time Winter Olympian & Ski Sunday presenter Chemmy Alcott returns to Chamonix, France, to witness firsthand how far glaciers there have retreated due to climate change.

Read more: 'My son wants to ski race but I fear for the sport's future'

Watch Ski Sunday on 11 February from 17:15 GMT on BBC Two.