It also doesn’t help to keep saying “this does seem to be the result of human activity”. “Seems to be”? It is, the science has been clear on that for a long time. But even if it wasn’t our fault, it would still be our responsibility to fix it. Because, you know, we live on the planet.
If I’m inside a house and it catches on fire, I’m not going to kick back on the sofa and not do anything because I didn’t start the fire. If it started because a group of idiots decided to launch fireworks inside, I’m not going to argue semantics about who exactly thought it was a good idea and who didn’t—the fucking house is on fire—what we need is for everyone to work together right now to put it out.
If you can't say with any clarity what action needs to take place and by whom, then you aren't really contributing to a solution. Reacting to a fire in a house is much easier because it is clear how individual action can help. For example: you can call the fire department, I can get a fire extinguisher. Notice the word "we" is not in those sentences.
See here: https://www.nature.com/articles/s41558-024-02084-1
Second, if you live in a cold country, improve your house heating efficiency and/or switch to heat pumps.
Third, consider a more efficient method of transportation, like bikes, walking, eletric vehicles, public transit, etc.. (bikes, walking and transit have the benefit of also being very good for our health)
Fourth, vote for politicians aware of the issues and enacting changes.
There's a lot everyone can make individually and collectively :)
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Important to mention: if you're going to adopt a plant-based diet, there are a few things you need to supplement, for the most part vitamin B12, maybe Omega-3 and others, and you do need to make sure you're getting necessary nutrients from a variety of plants (for example, walnuts and chia seeds also contain Omega-3). There are many resources online with dietary guides.
Almost everything is inconsequential compared to living in a (detached) house. The detached house increases consumption of all kinds by orders of magnitude due to greatly increasing the distance everything moves to and around the house.
This is a US suburb:
https://www.planetizen.com/news/2024/02/127466-changing-shap...
Far less density of people.
Leading to a car centric less active and less communal lifestyle.
If I’m a carpenter ant eating away at this house, just like all other carpenter ants in the group, and I recognize that continued eating will collapse the house and kill all of us, what can I, a singular ant, do to stop everyone from munching away? I can say “we the ants must stop eating this house.” They just keep on eating. It’s not helpful.
https://news.ycombinator.com/item?id=49662025
I do all those and more. For example (relevant to your analogy), I speak with the people around me (never preachy, that’s no way to change someone’s mind) about why I do what I do, and adjust myself to be reasonable to the situation. It has instilled change in others, who in turn change others themselves. You the single ant are not alone. Motivate the people around you, there are other single ants in other parts doing the same. Expand your area until you meet, then keep going. If you look online in your area, you may be able to find other like minded people and groups with whom you can take collective action.