Wide Angle: Engineering Earth
Geoengineering, or using technology to purposely cool the climate, is officially on the radar. President Obama's science adviser, John Holdren, is talking about it, the National Academy of Sciences is meeting about it, Defense Advanced Research Projects Agency (DARPA) is considering funding it, British Parliament is discussing it -- as well as a host of international scientists -- is discussing it. So what are the various types of projects being considered? And would they mitigate rising temps, or just make matters worse? We'll explore these questions and more in this week's Wide Angle: Engineering Earth.
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Could Submarines Subdue a Typhoon?
A Japanese firm thinks that a fleet of subs pumping cold water into the path of a typhoon could stop the storm in its tracks.
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Ocean Geoengineering Scheme May Prove Lethal
Seeding the oceans with iron could result in the production of a potent neurotoxin, putting the lives of birds, fish and even humans at risk.
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We Need to Bury CO2 Emissions
Energy generation that is free of carbon dioxide (CO2) emissions, such as wind and solar, will not displace enough carbon-based fuels to prevent atmospheric concentration of greenhouse gases from reaching dangerous levels. The authors say it should be buried deep underground.
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Artificial Trees Could Cool Climate
A new kind of artificial tree could cool the planet by removing a major greenhouse gas from the planet's atmosphere.
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Top 5 Geoengineering Schemes
Researchers recently published the first comprehensive assessment of geoengineering schemes -- large-scale efforts to reduce global warming. Here are five of the strongest contenders.
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