The World Watch Institute has "tracked" the estimated carbon emissions per passenger-mile traveled (grams of CO2):
Automobile...................... 130-390
Commercial jetliner.......... 180-280
Bus................................. 110-190
Train.............................. 100-180
Walking (if all calories came from...)
(top sirloin)................... 900-1,600
(ground beef)............... 500-1,500
(2% milk)..................... 200-400
(apple).......................... 50-100
(typical U.S. diet............. 160
(vegan diet)..................... 30
Which path will you choose?
10.17.2008
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Awesome information. Yay for walking most of the time, and eating vegan most of the time! Thanks! -sage
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