In 2011, Greenpeace - the world's largest environmental campaigning organisation - celebrates its 40th anniversary. French photographer Pierre Gleizes has shot some of the organisation's best known photographs over the three decades he has worked for Greenpeace. Some of these pictures have truly changed the way we look at our planet and the environment.

More information: http://www.greenpeace.org/

Author: Greenpeace
Copyright: Greenpeace