ABC News: Saviour or scientific hubris? Geoengineering the planet to counter climate change
"By 2010 a large number of "geoengineering" experiments were under consideration — but now major experimentation appears to have stalled. The reasons why reflect the difficulties in trying to deliberately manipulate a system as complex and fragile as the Earth's environment. They may also speak to the limits of political will, the public's fear of human meddling, and the problematic line between innovation and scientific hubris."