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.

"I want my images to go more than skin-deep. I want the viewers to feel the vulnerability of their existence and how it relates closely to the sensitivity of the world's glaciers," he told our Swiss office.

Without clothes, the human body is vulnerable, exposed - its life or death at the whim of the elements. Global warming is stripping away our glaciers and leaving our entire planet vulnerable to extreme weather, floods, sea-level rise, global decreases in carrying capacity and agricultural production, fresh water shortages, disease and mass human dislocations.

If global warming continues at its current rate, most glaciers in Switzerland will completely disappear by 2080, leaving nothing but valleys and slopes strewn with rock debris. Over the last 150 years, alpine glaciers have reduced in size by approximately one third of their surface and half of their mass, and this melting is accelerating. The Aletsch Glacier retreated 115 meters (377 feet) in a single year from 2005 to 2006.

You don't need to get naked on a glacier to do something about climate change. Watch our new film The Convenient Solution to find out how we could cut emissions and halt climate change and then write to your MP telling them you want a convenient solution.