Yesterday @stranraerobserver.bsky.social‬ questioned my posting of an image comparing the impact of going vegan, car-free or getting a heat pump, so I dug deeper into the study behind the slide. It could use a refresh. lloydalter.substack.com/p/forget-hea... - ThreadSky

lloydalter.bsky.social • 13 days ago

Yesterday @stranraerobserver.bsky.social‬ questioned my posting of an image comparing the impact of going vegan, car-free or getting a heat pump, so I dug deeper into the study behind the slide. It could use a refresh. https://lloydalter.substack.com/p/forget-heat-pumps-get-a-bike-and

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annieleymarie.bsky.social•13 days ago

That's GHG impact, not full climate impact. Meat/dairy has big climate impacts from land use ('carbon opportunity costs') & land use change (deforestation for meat & feed), & food - mostly animal-based - has the top, or 2nd top impacts on other 'planetary boundaries': https://www.youtube.com/watch?v=MjnOP2m3yE4

lloydalter.bsky.social•13 days ago

I include a graph from OWID in the post showing that climate impact almost doubles when you include land. I should check that against the study.

annieleymarie.bsky.social•13 days ago

There's also the matter of the time horizon used for methane. Currently the standard is 100 years (when CH4 is ~30 x more powerful a GHG than CO2) but within 20 year CH4 is ~80 x more potent than CO2. Vested interests are pushing for downplaying CH4's impacts via anothe metric https://shorturl.at/BoJXB

annieleymarie.bsky.social•13 days ago

FWIW: Project Drawdown's chart on individual actions for climate. And their 'plant-rich diet' contains 4 times more red meat than the 'planetary diet' recommended by EAT Lancet (itself quite far from a fully plant-based diet) https://drawdown.org/insights/the-powerful-role-of-household-actions-in-solving-climate-change

stranraerskirlie.bsky.social•13 days ago

That's very interesting. Thank you.

annieleymarie.bsky.social•13 days ago

In their Table of Solutions' to remain under 2°C warming they rank their Plant-rich Diets as # 2 out of 96 solutions listed (not just for households/individuals). Shifts to/towards plant-based diets would also reduce food waste, which is their # 1 solution. https://drawdown.org/solutions/table-of-solutions

g33nid33.bsky.social•13 days ago

You are forgetting the important part: Insulate your house.

That will outweigh almost everything else you can personally do. (#1 is voting for sane people)

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