logoalt Hacker News

TheSilva • today at 9:59 AM • 13 replies • view on HN

We could all try and do a bit with our daily choices:

https://www.sciencefocus.com/news/best-source-protein-tofu

  "Tofu has been crowned the prince of protein by a scientific scoring system that measured human health, sustainability and affordability.

  ...

  To assess the environmental impact of each food, MacDonald compared the greenhouse gas emissions, water pollution, land use and water use involved in producing 100g (3.5oz) of protein from each food.

  Tofu was judged the best in this category, followed by chia seeds, quinoa, beans and sunflower seeds. Meanwhile, pork, beef and cheddar cheese came last."

Replies

Tade0 • today at 10:22 AM

Key figure missing in this article is "by how much"?

https://www.bbc.com/future/article/20221214-what-is-the-lowe...

Compared to chicken breast it's about 2.87x less impactful, but the real offender is beef, which has 25x the footprint of tofu.

Overall we really just need to get rid of beef. On an annual basis the carbon footprint of the respective protein sources is:

-tofu - less than 500kg

-chicken - less than 1250kg

-beef - over 10 tonnes

Mix one part peas with two parts chicken and you're around a tonne - a reasonable amount without having to even touch tofu.

➕ show 2 replies
closingreunion • today at 10:08 AM

If you don’t want to give up meat right away, at least consider stopping beef. One pound of beef is roughly equal to 8 pounds of pork, 10 pounds of chicken, and 20 pounds of tofu in CO₂ emissions.

➕ show 2 replies
rendaw • today at 10:13 AM

It's unfortunate it's a ranking... there could be huge or tiny gaps between the entries.

The original source https://www.frontiersin.org/journals/sustainable-food-system... links betterproteininstitute.com which then links https://www.betterproteininstitute.com/_files/ugd/7be592_a59...

The emissions for lamb/pork/beef are terrible, beef looks an order of magnitude worse than the rest. The top 10 or so are fairly similar in comparison. Chicken isn't bad comparatively, but tofu still looks a decent bit better.

➕ show 1 reply
throwaway198846 • today at 10:23 AM

Tofu lose soundly in human preference category (well for some people) which they neglected to take in account.

➕ show 2 replies
hackernud3s • today at 10:06 AM

It depends on how you do it.

Supermarket tofu is around 3 kg of CO₂e per kg. If you fatten pigs in your backyard and butcher them on site you can get pork down to around 4 or 5. I do realize McDonald's isn't doing it that way though.

➕ show 1 reply
fxwin • today at 10:08 AM

I'm surprised that chicken breast is that low in (water) pollution, beating even lentils. Seems like the big takeaway here is really how awful beef is in comparison to basically anything else lol

mik1998 • today at 10:15 AM

It's a fun metric the author carefully crafted to justify his vegan/animal rights ideology. Personally, I value food that can provide the necessary micronutrients and macronutrients (including fat, which apparently the author thinks is inherently bad), so I'll continue eating meat and cheese.

➕ show 4 replies
Uke • today at 11:19 AM

I'll start the day Elon and Taylor Swift stop flying private planes. I promise.

briansm • today at 10:21 AM

The world population grows by 200,000 extra people, every day. Keep in mind any adaptations have to compensate for this growth in population, continually, for at least the next couple of decades.

➕ show 2 replies
mklarmann • today at 10:30 AM

you can have a look at all the underlying impact assessments for food here: https://brightway.eaternity.ch/

palata • today at 10:07 AM

> We could all try and do a bit with our daily choices:

Another thing to do would be to not vote more and more for extremists. "It's not working right now, it cannot be worse so I will vote for the most extreme person that says I am doing everything right and foreigners are the problem" is easy, but counter-productive and wrong.

I still don't know what to answer to someone who says "anyway the government is completely incompetent" while being incompetent themselves at the very first opportunity they have to contribute: voting.

Not saying that it is going well right now (it's not). But saying "because it's not going well means that it cannot be worse and therefore I can vote for whoever" is... just idiotic.

➕ show 2 replies
fahrvrgnugen • today at 10:34 AM

[dead]

ChrisRR • today at 10:55 AM

Let's be honest. People aren't eating tofu because it's fundamentally not that nice. There's plenty of ways you can improve it, but it just doesn't taste good without effort like most meats do.

Realistically the only thing we'd be able to convince people to do is to eat less beef, but you're never going to be able to convince the population to switch over to tofu

➕ show 4 replies