Underreported: Geo-Engineering and Global Warming

As the threat of Global Warming grows more urgent, some scientists are looking at ways to change the climate through geo-engineering. Proposals include everything from sulfur-dioxide spewing zeppelins to simply blocking out the sun. The only catch is that most of these technologies come with dangerous and extremely undesirable side effects. Graeme Woodwrote about geo-engineering for the July/August issue of the Atlantic Magazine.