An environmental disaster that occurred in Hungary in 2010 could lead to a new way of removing carbon dioxide emissions from the atmosphere. In October 2010 around 1 million cubic metres of highly caustic ‘red mud’ sludge was released from a waste containment facility near the Hungarian town of Ajka when a retaining wall failed. […] … learn more→

Since most of the world’s governments have not yet enacted regulations to curb emissions of greenhouse gases, some experts have advocated the development of technologies to remove carbon dioxide directly from the air. But a new MIT study shows that, at least for the foreseeable future, such proposals are not realistic because their costs would […] … learn more→