Specialist Stock is a division of Robert Harding World Imagery. Its comprehensive collection of photo and footage libraries makes it a world leader on the environment. The Specialist Stock collection holds one of the best `Green’ collections in the business, which includes images of science, society and natural world. It specialises in new perspectives on environmental issues, themes and new technology. They supply video content and do specialised video research and distribute multimedia packages worldwide to TV broadcasters, International NGOs, News, Publishers and the educational sector.