Prince William and Sir David Attenborough have joined forces to launch what they hope will become the ‘Nobel Prize for environmentalism’. They say the search is on for fifty solutions to the world's gravest environmental problems by 2030. The ‘Earthshot Prize’ of £50m will be awarded over a decade, It’s the biggest environmental prize ever. The Prince said ‘positivity’ had been missing from the climate debate - something the award could supply. ‘The prize is about harnessing optimism and urgency to find some of the world's solutions to some of the greatest environmental problems’, he told the BBC. ‘Anyone could win’. He called for ‘amazing people’ to create ‘brilliant innovative projects’ to help save the planet. There will be five awards of £1m each year for ten years.