Greenpeace ambassadors Keisha Castle-Hughes and Lucy Lawless launch the latest Greenpeace \"Sign On\" campaign aimed at Prime Minister John Key to take action over climate change, Vulcan Lane, Auckland, New Zealand, Tuesday, August 18, 2009.

Greenpeace ambassadors Keisha Castle-Hughes and Lucy Lawless launch the latest Greenpeace \"Sign On\" campaign aimed at Prime Minister John Key to take action over climate change, Vulcan Lane, Auckland, New Zealand, Tuesday, August 18, 2009.

Greenpeace ambassadors Keisha Castle-Hughes and Lucy Lawless launch the latest Greenpeace \"Sign On\" campaign aimed at Prime Minister John Key to take action over climate change, Vulcan Lane, Auckland, New Zealand, Tuesday, August 18, 2009.

A blue plaster cast based upon Prime Minister John Key\'s recent broken arm is the focal point of the latest Greenpeace \"Sign On\" campaign aimed at the Prime Minister to take action over climate change, Vulcan Lane, Auckland, New Zealand, Tuesday, August 18, 2009.

Greenpeace ambassador Lucy Lawless launches the latest Greenpeace \"Sign On\" campaign aimed at Prime Minister John Key to take action over climate change, Vulcan Lane, Auckland, New Zealand, Tuesday, August 18, 2009.

Greenpeace ambassador Keisha Castle-Hughes gets Warren Nga to sign her plaster cast as she launches the latest Greenpeace \"Sign On\" campaign aimed at Prime Minister John Key to take action over climate change, Vulcan Lane, Auckland, New Zealand, Tuesday, August 18, 2009.