The Guardian view on solar geoengineering: Africa has a point about this risky technology | Editorial

Sun-dimming risks putting the planet’s thermostat under Donald Trump’s control. Better to adopt the precautionary principle with high-stakes scienceIt is fitting that this week’s UN environment talks are in Nairobi, with Africa shaping the global climate conversation. The continent’s diplomats are dealing with the vexed question of whether it is wise to try to cool the planet by dimming the sun’s rays. While not on the formal summit agenda, on the sidelines they are