BBC News - Guns and sunshades to rescue climate:
"While humans have a long history of wanting to control weather and climate - cloud seeding is an example - this incarnation of geoengineering is such a hot potato that scientists cannot even agree whether it should be discussed publicly.
'The knowledge that we maybe could engineer our way out of climate problems inevitably lessens the political will to begin reducing carbon dioxide emissions,' observes David Keith from the University of Calgary in Canada."
