Deflecting the sun to fight climate change could trigger droughts and hurricanes, the Royal Society has warned. In a new report, experts argued solar radiation modification (SRM) could reduce global temperatures but "worsen rather than ease" climate change and make the sky look less blue. In May, the Government's Advanced Research and Invention Agency (Aria) announced £56.8m for 21 "climate cooling" projects, which include injecting aerosols into the sky to reflect sunlight away from Earth. However, the report found there were "major uncertainties" and argued the plan may have devastating knock-on effects, particularly if deployed by rogue groups. Prof Jim Haywood, of atmospheric science at the University of Exeter, said: "What you do in one place can cause climate change in a different place. "Stratospheric aerosol injection deployment in the northern hemisphere could impact the position of the tropical monsoon and lead to droughts in sub-Saharan Africa. "Everyone there relies on subsistence farming, so it quickly devastates if there is a drought there. "In the southern hemisphere, it could lead to an increase in North Atlantic hurricane frequency and intensity, it could lead to winter droughts over the Mediterranean and the Iberian Peninsula." A "termination effect" whereby sun dimming technology was suddenly stopped, could also lead to rapid warming of up to 2C in decades, and cause devastating effects for ecosystems.