National Journal: Sure, we can fight the effects of climate change by cleaning the emissions from cars and putting scrubbers on the smokestacks of power plants. But doesn't a massive problem require a big solution like, say, spraying sulfur dioxide into the atmosphere to reflect the rays of the sun back into space?
That's the concept behind geoengineering, a broad term that refers to hypothetical strategies to artificially engineer the Earth's climate. For example, the atmosphere spraying, which would mirror the...