How would the geoengineering solutions that David Keith presents alter planetary energy balance?

We have been discussing the potential impacts of a warmer world. These impacts could be devestating and lead to not only a lot of human suffering, but also a global mass extinction. Because of these forecasted horrific impacts, more and more scientists and politicians are beginning to think that geoengineering may be a solution. Instead of reducing greenhouse gases, this approach looks to see if there are other pieces of Planetary Energy Balance that we could manipulate to cool the planet. Watch this Tedtalk video where David Keith outlines how geoengineering might work and some of the broader social and political implications: http://www.ted.com/talks/david_keith_s_surprising_ideas_on_climate_change.html Also watch this commentary on Democracy Now: http://www.democracynow.org/2013/5/20/geoengineering_can_we_save_the_planet To respond to this week’s discussion, address one of the following questions: 1) We discussed planetary energy balance in great detail in this class. Besides greenhouse gas emissions what parts of planetary energy balance can humans manipulate? How would the geoengineering solutions that David Keith presents alter planetary energy balance? 2) Do your own research and write about some other geoengineering ideas to slow down global warming. Describe these ideas in terms of how they would alter planetary energy balance? 3) What are your thoughts about geoengineering? Are we trying to manipulate a system we do not understand? Or could it be a good solution? What are the social and political implications of such a solution? What countries would you trust with the power to change global climate? 4) Respond to someone else’s post. Do you agree or disagree with their opinion?

 

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