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Here's a useful article.  The graphic is particularly clear.
http://www.nytimes.com/2013/01/27/sunday-review/the-biggest-carbon-sin-air-travel.html?_r=0 
C

The opinions and thoughts expressed here are my own and should in no way be construed or attributed to the Exploratorium or related organization, and do not represent an institutional position.
Charles Carlson
http://blogs.exploratorium.edu/whyintercept/
Twitter: @charliec53
email: [log in to unmask] 
Tel:   415-528-4319
Fax:  415-885-6011














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