"Could it be possible to find someone on Earth who could devise a way of removing the lethal amount of CO2 from the Earth's atmosphere?" asks Sir Richard Branson , Chairman of The Virgin Group , with former Vice President Al Gore at his side, during the announcement of the Virgin Earth Challenge in London last Friday (February 9th). The challenge offers a prize of $25 million for the scientist who comes up with a way of extracting greenhouse gases from the earth's atmosphere. Read the full story at Phyorg.com.

(Photo by JS Barrie via Creative Commons and Flickr)