Bill McKibben writing for The New Yorker:

The scientists who study solar geoengineering don’t want anyone to try it. But climate inaction is making it more likely.

If we decide to “solar geoengineer” the Earth—to spray highly reflective particles of a material, such as sulfur, into the stratosphere in order to deflect sunlight and so cool the planet—it will be the second most expansive project that humans have ever undertaken…

Dimming the Sun to Cool the Planet Is a Desperate Idea, Yet We’re Inching Toward It