Richard Branson has offered a prize of $25 million for someone to develop technology to combat climate change.
Over at NASA they are looking at different ideas as well, 5 Ways to Save the World will be shown on 19 February at 9pm, I really don't know why I even wasted cyberspace mentioning it, I won't be watching. Why? Three words, they won't work.
The technology already exists. It was developed in 1982 as a solution to climate change. Even 10 Downing Street accepts it exists, but nothing can be done as that would amount to a commercial endorsement, better to let 5 billion people die.