Intentionally engineering Earth's atmosphere to offset rising temperatures could be far more doable than you imagine, says David Keith. But is it a good idea?

The article discusses solar radiation management, focusing on the the applied physics professor David Keith's proposal to release sulfuric acid into the lower stratosphere to reflect sunlight and mitigate the effects of climate change on Earth. Topics include geoengineering, the potential ozone loss that could result from injecting sulfates and water vapor into the stratosphere, and possible field experiments.