The Duke of Cambridge has launched a £50 million environmental prize that will make five £1 million awards each year until 2030 to solutions to environmental problems. A council of campaigners, diplomats and celebrities will decide on the prizes. Speaking to Sir David Attenborough to mark the launch, Prince William said he had been inspired to take on environmental causes by the Duke of Edinburgh and Prince of Wales. Prince Philip was closely involved with the World Wildlife Fund for several decades, and Prince Charles has often spoken about his concern over climate change.