Warning - this story contains nudity

That was bound to get your attention. And that is precisely what 600 volunteers thought when they took off their clothes on a glacier in the Swiss Alps to call for action against climate change.

The nude volunteers posed for our Swiss office and renowned installation artist Spencer Tunick on the Aletsch Glacier. Known around the world for his installations, Spencer Tunick wants people to know that global climate change is not an abstract issue, but a hazardous threat which affects us all.