Solar geoengineering as a way to fight climate change, and its potential side-effects - a podcast by CBC Radio

Could solar geoengineering be a solution to climate change? There are several methods, including spraying sulphuric acid into the stratosphere to reflect light back into space. But do we know enough about the risks and potential side-effects? We learn more from David Keith, a professor of applied physics at Harvard's school of engineering and applied sciences.

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