Mikaela Shiffrin leads push for winter sports sustainability amid climate crisis

• American skier wants to make her sport climate neutral
• Letter signed by Shiffrin and scores of others sent to FIS

US star Mikaela Shiffrin has led calls for ski chiefs to change their approach to sustainability in a bid to make winter sports justifiable to a public ever more aware of climate change.

Entitled Our sport is endangered", a letter to International Ski Federation (FIS) president Johan Eliasch signed by Shiffrin and scores of others claimed the body's current sustainability efforts were insufficient".