The Obama administration is now seriously looking at radical technologies tocombat global warming, according to the Associated Press.One of the main ideas that is being considered is climategeoengineering.

Climate geoengineering involves the large-scale, deliberate modification ofthe Earth's environment to suit human needs and habitability. In this case, itis the act of deliberately manipulating the Earth's climate to counteract theeffects of global warming from greenhouse gas emissions.

One particular option that was mentioned in the AP interview with JohnHoldren, who is the president's new science adviser, is shooting pollutionparticles into the upper atmosphere to reflect the sun's rays. Holdrencautioned that such a measure would only be used as a last resort.

A second option that he mentioned was the use of artificial trees to suckcarbon dioxide out of the atmosphere and put it in storage.

Story by AccuWeather.com senior meteorologist Brett Anderson