Context provides news and analysis on three of the world’s most critical issues:
climate change, the impact of technology on society, and inclusive economies.
This site is archived: Visit Context for the latest news and analysis on the three biggest issues affecting people, society and the environment.
As climate change strengthens, geoengineering ideas - such as shooting reflective particles into the atmosphere or capturing emissions and pumping them underground - are increasingly being considered. Are they a threat - or a good idea?