Solar Radiation Management (SRM) is one of the two main forms of geo-engineering, and refers to technologies that aim to combat global warming by reflecting a small percentage of the sun's energy back into space.
Proposed SRM projects include artificially seeding clouds to reflect energy back in to space and launching orbiting solar mirrors.
Critics claim such proposals are unproven, distract from the urgent need to reduce carbon emissions, and would fail to address the ocean acidification that results from increased concentrations of carbon dioxide in the atmosphere.
However, a 2009 report from the Royal Society warned that geo-engineering techniques could represent the only way of curbing dangerous levels of climate change and as a result investment in R&D should be increased.
UK insurers will be called upon next month by the Prudential Market Authority to stress test their business against a range of climate and transition risks
As ClientEarth warns too many councils have missed deadlines to submit air quality plans, government confirms fresh support from its Clean Bus Technology Fund
Environment Agency chair Emma Howard Boyd's speech at the European Bank for Reconstruction and Development - in full
Britain has its first new deep coal mine in decades - a result of pretending climate change isn't political
Rebecca Willis argues the controversial decision to approve a new coal mine in the UK is symptomatic of a wider political failure