Greenhouse gases are heating up the planet, spurring plenty of controversy about whether — and how — to stop pumping carbon dioxide into the atmosphere. But some scientists are looking at another option, one they often see as an emergency brake: Geoengineering.
The idea behind geoengineering is to combat man-made climate change with man-made solutions, mostly involving ways to pull carbon out of the atmosphere or to deflect the sun's rays so the carbon dioxide has less heat to trap. The ideas are largely untested and highly controversial. They also involve tackling major technological challenges, some of which may be too great to overcome.
To read the original article: Incredible Tech: How to Engineer the Climate | LiveScience
