I draw the concept, or write down the formula or even a sentence, on a shared board/screen etc. So I can clearly show my understanding and check where the other person understanding is different.

It means that we have to work together to come to a common understanding.

There is no need to express opinions when we have good estimates for both your questions:

Sector by sector: where do global greenhouse gas emissions come from? -> https://ourworldindata.org/ghg-emissions-by-sector

individual solutions reviewed and assessed by Project Drawdown, including their relevant sector(s) and their impact on reducing heat-trapping gases -> https://drawdown.org/solutions/table-of-solutions

Both the links above are from a very interesting video on the topic that I suggest to take a look at. Also the whole channel is really interesting and well done -> https://www.youtube.com/watch?v=ReXaS4QausQ

Wow, this is visionary.

What are your interests?

In the meantime you could follow a couple of communities is where people share interesting videos:

• !peertube@lemmy.world

• !peertube@lemmy.wtf

(thanks @asudox@lemmy.asudox.dev for the correction)

What are your interests?

Anyway you could try following this community: https://lemmy.world/c/peertube

How many cars, how much they are driven and how they are driven, depend on urban development.

Urban development -> cars -> pollution

If you want less cars going around, design your cities to allow and incentivize people not to use them. See recent developments in Paris as an example:

https://www.nbcnews.com/science/environment/paris-olympics-city-reduce-air-pollution-rcna153470

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