Could one solution to climate change be to harvest the power of sunlight where it shines brightest on the planet? Should we solar panel the Sahara desert?
Four experts discuss the radical proposal with the BBC World Service Inquiry programme.
Gerhard Knies: Scientifically sound and economically viable
Dr Gerhard Knies co-founded TREC, a network of experts on sustainable energy that gave rise to the Desertec initiative, which aimed to provide Europe with clean energy by harnessing sustainable power from sun-rich deserts.
“Fifteen minutes after I learned about the nuclear accident at Chernobyl, I made an assessment of how much energy comes from the sun to the earth. It was about 15,000 times as much as humanity was using, so it was not a question of the source, it was a question of the technology.