It's ranked in terms of low-hanging fruit ('these are the highest-impact changes we could make') rather than absolute harm, but the spirit is the same as the question you're asking.
Realistically, the only thing you can do as an individual is campaign for political change:
It's ranked in terms of low-hanging fruit ('these are the highest-impact changes we could make') rather than absolute harm, but the spirit is the same as the question you're asking.
Realistically, the only thing you can do as an individual is campaign for political change:
https://www.sunrisemovement.org/
http://climatehawksvote.com/
https://rebellion.earth/