One million species threatened by human destruction - report
A new United Nations report on biodiversity is warning that one million species around the world could be extinct in the coming decades - thanks mainly to human destruction of their natural habitats. The just-published United Nations assessment - known as the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) - says nature is declining globally at rates unprecedented in human history. Andy Purvis is a researcher at the Natural History Museum in London and one of the report's lead authors. He talks to Corin Dann.