Access

Commentary

Nature Geoscience 1, 722–724 (1 November 2008) | doi:10.1038/ngeo348

Ranking geo-engineering schemes

Philip W. Boyd

Propelling aerosols into the upper atmosphere or pumping carbon dioxide into the deep ocean are just two schemes that have been proposed to repair the Earth's climate through geo-engineering (see Box 1). In the absence of adequate reductions in anthropogenic CO2 emissions, geo-engineering has been put forward as the only remaining option that might fix our rapidly changing climate.