It could cool the planet by mimicking volcanoes, but is it worth the risk?
Solar geoengineering research runs into barriers as indigenous opposition sparks a 2022 strategy rethink
In 1965, US president Lyndon Johnson’s science advisers urged research into reflecting sunlight to keep the Earth cool amid projections of an alarming build-up of greenhouse gases in the atmosphere as a result of burning fossil fuels.
Almost six decades later, “solar geoengineering” research has made scant headway.
It attracts less than 1% of climate science budgets, amid fears that tampering with the global thermostat could produce unexpected consequences — and distract from an overriding need for deep cuts in greenhouse gas emissions...