A collection of images from early Greenpeace campaigns, which are included in the Sundance award-winning film 'How to Change the World.'

Greenpeace is synonymous with the modern-day eco-movement, and its high-profile campaigns still manage to capture the imagination of global citizens. But where did it all begin? How was such a colossal enterprise initially established? Director Jerry Rothwell sets out to explore all that on the big screen. 'How to Change the World' utilizes a mixture of never-before-seen footage from the Greenpeace archives, cut with recent interviews with some of the key figures present during those early days.