Ed Kashi on his environmental photography projects in Niger Delta and Madagascar | guardian.co.uk

The photojournalist Ed Kashi’s work chronicling oil extraction in the Niger delta, the Curse of the Black Gold, won him the Prix Pictet Commission, whereby he was invited to produce a body of work on the theme of Earth. Here he discusses the Deepwater Horizon oil spill, his work in the Niger delta and the recent Prix Pictet exhibition, Madagascar: A Land Out of Balance.