Library of outstanding wildlife photography that licenses reproduction rights of Lee Dalton's work www.nhpa.co.uk

Incredible wildlife photography from award-winning photographer (and father) Stephen Dalton. www.stephendalton.co.uk

Greenpeace is one of the world's most effective environmental organisations. www.greenpeace.org

The Global Canopy Programme is an alliance of 37 scientific institutions in 19 countries, which lead the world in forest canopy research, education and conservation www.globalcanopy.org