That graph actually shows that in Canada paying extra for "green" energy is more impactful than going car-less. Which is an interesting result.
Unfortunately a lot of these problems are somewhat institutional.
The childrens expected emissions are based on projects which can be heavily influenced by the amount of societal investment over the next few years.
Living car free for most, would require a robust, easy to use and affordable public transit next work. Just taking Lifts all the time will probably increase the emissions you are causing.
More efficient cars have largely been driven by and continue to be driven by regulation.
And livestock play an important role in the nitrogen cycle. going strictly 100% plant based for everyone would cause a fertilizer, soil quality crisis. and would leave a lot of chaff rotting . While us North American almost certainly do overindulge, plant based for climate reasons is a little too simplistic.
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