This Month In Wired: Geoengineering and Ken Caldeira

Ken Caldeira has graced our pages a number of times, and now graces Wired Magazine. We quoted him earlier saying "Many people argue that we need to prevent climate change. Others argue that we need to keep emitting greenhouse gases. Geoengineering schemes have been proposed as a cheap fix that could let us have our cake and eat it, too. But geoengineering schemes are not well understood. Our study shows that planet-sized geoengineering means planet-sized risks."

According to Chris Mooney in Wired, he is analyzing those risks, and appears now to be confident that filling the stratosphere with sulfur dioxide might actually work in reflecting sunlight back into space, just like it did after Mount Pinatubo blew 20 million tons of it 22 miles into the atmosphere. Caldeira recognizes that there are risks, but according to Wired,

"Caldeira's response is that it's hard to see how those consequences would be anywhere near as nasty as simply letting global warming go unchecked. But the more geoengineering becomes a matter of public debate and concern, the more the downsides of a remade world come under scrutiny. First, there's the fear that injecting sulfate into the stratosphere could destroy much-needed ozone, which also declined markedly after Pinatubo." More in ::Wired

More from Ken Caldeira in TreeHugger

Giving Geo-Engineering Another Go: Dumping Limestone into the ...
When Your Best Isn't Good Enough: Zero-Emission Policy Only Way to ...
Planting Trees Helps Fight Global Warming, but Only in the Tropics ...
Geoengineering: A (Very) Risky Proposition Says Study

More on Geoengineering in TreeHugger

Wallace Broecker vs. Greenpeace: Climate Scientist Argues in Favor of Ocean CO2 Storage
Scientist Who Coined "Global Warming" Calls for the Deployment of 20 Million Carbon Scrubbers
Tim Flannery: Plant Forests with eBay, Pump Sulfur into the Stratosphere to Fight Climate Change
Pumping Sulfate Particles into the Stratosphere: Not Such a Hot Idea After All
Andy Revkin on Geoengineering