Geo-engineering the earth’s ecology and climate

What if the world continues to fail to reduce greenhouse gas emissions?  There is a different approach to fighting global warming, called geo-engineering.  It means intentionally tampering with the Earth’s ecology and climate systems to stop global warming.

David Keith, in the video above, advocates releasing ash into the air to absorb sunlight.  Joseph Cannon, in a blog post (link below), advocates using Pykrete—ice impregnated with wood pulp—to slow the melting of Arctic ice.  Another plan is to dump clouds of iron filings into the ocean, stimulating the growth of plankton and other marine plants that absorb carbon dioxide.

Other scientists are working on genetically-engineered plants that would absorb sunlight more efficiently and suck up carbon dioxide in greater amounts.

I’m leery of such plans, without having any specific objections beyond Murphy’s Law. the Law of Unintended Consequences and the Precautionary Principle.

But if global warming starts to accelerate, the world’s people will demand emergency action, whether such action is well thought out or not.  So I agree with Joseph Cannon.  It is time to research Plans B just in case.

Keep in mind, though, that the open-ended buildup of greenhouse gasses, if not stopped, will sooner or later overwhelm any Plan B.   And that would require a Plan C, a Plan D and a Plan E.  Which would be followed by more plans to counteract the unforeseen effects of the earlier plans.

Or maybe, by that time, the problem will have been rendered moot by the scarcity and high price of what’s left of the world’s coal, oil and natural gas.

LINKS

Climate change and the limits of debate by Joseph Cannon for Cannonfire.  (Hat tip to Cannonfire for the video)

Should we upgrade photosynthesis and grow supercrops? by Michael Le Page for New Scientist.

 

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