Commentary
TED: A critical look at geoengineering against climate change
Environmental scientist David Keith proposes a cheap, effective, shocking means to address climate change: What if we injected a huge cloud of ash into the atmosphere to deflect sunlight and heat?
A radical solution to address climate change, with David Keith
The Economist: David Keith on why carbon removal won’t save big oil but may help the climate
Crooked: There Goes the Sun?