In a new study, researchers say spraying chemicals into the atmosphere to ‘dim the Sun’ has never been a magical fix-all to cure humanity’s dangerous addiction to burning fossil fuels, but if used carefully – with a goal of only halving global temperature increases – it could safely work after all.

“Some of the problems identified in earlier studies where solar geoengineering offset all warming are examples of the old adage that the dose makes the poison,” Harvard University physicist David Keith explains.

“Big uncertainties remain, but climate models suggest that geoengineering could enable surprisingly uniform benefits.”

Source: Harvard Scientists Say Their Wild Plan to Dim The Sun Could Actually Work Safely