From The Economist:
Efforts to raise awareness of global warming take many forms. On Saturday August 18th Greenpeace launched its latest stunt to sway doubters that a heating planet is generally a bad thing. The environmental group co-opted Spencer Tunick, an artist renowned for his photographs of rolling acres of nude men and women, to repeat his trick on a Swiss glacier. But art and protest do not always make for happy bedfellows—crude polemic and subtle imagery often jar. Perhaps a bigger concern for the activists is that these days the naked form has lost much of its power to shock.