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Last week author Michael Pollan made a statement that upset many. His words, "A vegan in a Hummer has a lighter carbon footprint that a beef eater in a Prius." Obviously his claim drew immediate criticism, but is there any truth to his words?
Well, it turns out that Pollan was indeed wrong across the board. Gidon Eschel and Pamela Martin from the University of Chicago decided to investigate the claims made by Pollan. According to their research, switching from a meat eater to a vegan saved around 2 tons of CO2 per person each year. Additionally, a Hummer emits an average of 4.76 tons of additional CO2 pollutants than a Prius does per year. The conclusion, a vegan in a Hummer would still contribute an additional 2.76 tons of CO2 than a meat eater in a Prius would.
Pollan decided to retract his statement by saying, " After digging into it further, and consulting Gidon Eschel, I don't feel comfortable defending [my earlier statement]. It's much more important to keep the focus on the central thrust of the environmental case against eating industrial meat, which is not in dispute and certainly does not stand or fall on the case of the vegan Hummer driver."
Pollan is the author of The Botany of Desire, The Omnivore's Dilemma in which he constantly opposes meat eaters and suggests they have a negative impact on the environment.
However, as we know by now, the Prius is one of the cleanest vehicles on the planet and as such should not be subjected to the claims made by Pollan. The Prius achieves 50 mpg, does so without emitting a high amount of pollutants, sells in high volumes, and throughout its production cycle has saved millions of gallons of gas each year compared to its gasoline only counterparts.
Source: AutoblogGreen
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Nik Posted: 11/1/2009 4:27am PST
Gretel Posted: 11/1/2009 4:41am PST
I remain unconvinced at how accurate this claim is (and I am not a vegan). I'm sure if we were to dig deeper into this study we would be able to find even more flaws.
Innovator Posted: 11/1/2009 2:25pm PST
If memory serves me right, that report was flawed. It made the assumption that the Hummer would be scraped after 200,000 miles and the Pirus after 100,000. Alloting twice the life time brought the manufacturing pollution of the Hummer to less than the Pirus. I don't believe it addressed costs, just pollution. The Hummer weighs almost 3 times the Pirus, how could the material cost be less? And for sure the running cost of the Pirus is a small fraction of a Hummer.
Elaine Vigneault Posted: 11/2/2009 5:58am PST
DUH.
Jan Posted: 11/2/2009 6:51am PST
Bret Posted: 11/2/2009 9:23am PST
Why do they try to guilt other people into becoming vegans with bogus claims?
Except for some fundamental religions, I have never met a group of people who are so intollerant of the right of others to do as they choose.
I have cut my meat consumption in half and may become vegetarian or vegan at some point. However, I never intend to force my own personal choices onto others.
Voltairine Posted: 11/2/2009 4:08pm PST
dev_interview Posted: 11/2/2009 4:57pm PST
josh Posted: 11/2/2009 7:10pm PST
Adam Posted: 11/2/2009 8:59pm PST
Here's a link to a web page covering the flawed report: http://news.cnet.com/8301-17938_105-9750840-1.html
Tidbits: The report assumed the lifespan of a Hummer to be 35 years and 379,000 miles, while the prius was assumed to have a lifespan of 11 years, and 105,000 miles.
Clearly a problem to begin with. The hummer might see 379,000 miles, if it is put on a trailer for 270,000 of those miles, while I know several prius owners with mileages far above 100,000. (Anecdotal yes, but still.)
hyerv Posted: 11/2/2009 11:59pm PST
Dan Posted: 11/3/2009 8:51am PST
Argleton Posted: 11/3/2009 10:01am PST
micah Posted: 11/4/2009 6:17pm PST
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