"Sir Richard Branson and Al Gore Announce The Virgin Earth Challenge A $25 million Global Science and technology Prize."

"Today, Sir Richard Branson and Al Gore announced the setting up of a new Global science and technology prize – The Virgin Earth Challenge – in the belief that history has shown that prizes of this nature encourage technological advancements for the good of mankind.
Virgin Green Fund

The Virgin Earth Challenge will award $25 million to the individual or group who are able to demonstrate a commercially viable design which will result in the net removal of anthropogenic, atmospheric greenhouse gases each year for at least ten years without countervailing harmful effects. This removal must have long term effects and contribute materially to the stability of the Earth’s climate."

These types (are there any more?) of idea campaigns are the ones that make you happy! Not only can you win quite a lot of money, you can also help the earth in the mean time. We want more contests like this!