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Apr 20, 2022 at 20:23 comment added PJTraill The link given for the data (for low-fat milk + Vitamin A) threw up a weird error (which smelt reminiscent of the waving of dead chickens), which turned out to be transient after I had found the site in the Wayback Machine; peanut butter, for example was under web.archive.org/web/20180909183430/https://… , among, no doubt, many other saves.
Mar 4, 2020 at 14:29 comment added kingledion @aucuparia That is if carbon is your only criterion for earth-healthy eating. I'd like to propose that many/most farms that do the varied veg parts are done in unsustainable ways; have you ever seen high-water-requiring asparagus grown in the deserts of Baja California, or lettuces growing under plastic sheeting in Virginia (where I am from)? There is some value to animals that eat forage crops (sudangrass, alfalfa, corn and soy byproducts) that can be rotated each year for better soil health, and require minimal pesticide inputs.
Mar 4, 2020 at 13:03 comment added aucuparia Good answer. Thinking about what role foods play in the diet, metrics like gCO2e per g protein or per g fat are also relevant (i.e. for each of the major macronutrients). I don't suppose there would be many surprises: for a low-carbon diet get your carbs from grains and pulses; your protein from pulses, nuts and seeds; and your fats from nuts and seeds. And eat lots of varied veg for micronutrients.
Jan 8, 2020 at 2:42 comment added kingledion @wardw123 Best of luck to you on your rapeseed based diet :)
Jan 8, 2020 at 2:25 comment added Ward W I estimated that canola (rapeseed) oil is >= 0.1 kg CO2 per 1,000 calories. There 0.4 kg CO2 per kg of canola seed, and 44% of canola seed = oil, so that's 0.4 / 0.44 = 0.91 kg CO2 per kg canola oil, which has 8,824 calories, so that's at least 0.10 kg CO2 per 1,000 calories. Need to add transit! Sources: 44%: en.wikipedia.org/wiki/Canola_oil#Production_process, seed per CO2: research.canolacouncil.org/research-summaries-details/15/…, 8,824 calories from google.com/search?q=calories+in+1+kg+canola+oil%3F
Jan 16, 2018 at 13:57 comment added BartDur Interesting answer, and fully agree with your last comment. It is probably better to compare food on a diet level (the footprint of an assortment of foods supplying calories and all sorts of nutrients in a healthy range) rather than product-by-product. See e.g. wwf.org.uk/eatingfor2degrees, for research on dietary level.
Jun 14, 2017 at 18:55 history edited kingledion CC BY-SA 3.0
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Apr 5, 2017 at 13:46 comment added mart I've awarded a bounty to this answer because you did the work to compute the interesting numbers AND gave a good hint how relevant it actually is.
Apr 5, 2017 at 13:45 history bounty ended mart
Apr 4, 2017 at 12:24 vote accept Martin Tournoij
Mar 31, 2017 at 21:50 history edited kingledion CC BY-SA 3.0
deleted 543 characters in body
Mar 31, 2017 at 21:00 history answered kingledion CC BY-SA 3.0