Matters of Scale - Carbon Tracks
Estimated carbon emissions per passenger-mile traveled (grams of CO2):
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|
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| Automobile | 130-390 |
| Comercial jetliner | 180-280 |
| Bus |
110-190 |
| Train |
100-180 |
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|
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| Walking (if all calories came from top sirloin) | 900-1,600 |
| (from ground beef) |
500-1,500 |
| (from 2% milk) |
200-400 |
| (from apple) |
50-100 |
| (from typical U.S. diet) | 160 |
| (from vegan diet) | 30 |
|
|
|
| Cycling (all calories from top sirloin) |
500-900 |
| (from ground beef) |
300-500 |
| (from 2% milk) |
100-200 |
| (from typical U.S. diet) |
100 |
| (from vegan diet) |
20 |
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|
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SOURCES: Vehicles: estimates compiled by Neil Kolwey of E-Source from U.S. Environmental Protection Agency and World Resources Institute data. Walking and cycling: Pacific Institute. Note: Numbers are selected estimates and heavily assumption-dependent.
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Purchase a PDF of the entire September/October issue of World Watch, or subscribe or renew to World Watch Magazine. Current subscribers, log in and download this issue, and past issues of World Watch.