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Global warming, pollution etc. are all absolutely happening, man made, and desperately need fixing.
Green ‘science’ is often total crap, pushed by someone with an agenda, that ends up undermining the real science spreading doubt, blaming the wrong people and getting in the way of fixing the issue.
I did the math a while ago, and there's a straightforward way we can solve this with hemp/cannabis/marijuana. It would take us 10 years to clean up the carbon we've released in the last.12,000 since we started smelting copper, but that requires 5,000,000,000 acres of constant hemp/* production with 4 harvests per year, and all the roots collected, compressed, and dumped into the Marianas trench. Once we did that, even at current emission levels we can cut back to 2,500,000,000 acres of production, and taper off as we manage to hit zero emissions. Effectively giving us a global "thermostat."
Of course the problem here is that you'd need the buy in of almost every single country on Earth, but the plants can be used for food, fuel, clothing, paper, housing, concrete, and a lot of other things, so it could actually be a net profit to the global economy.
You said we need 5 billion acres but that is more than all the present space used to grow crops worldwide. It's hard to imagine how you think this is possible
I may have remembered the total off by a factor it may only be 5,000,000 like I said I did the math a while ago, it came out to roughly 1.5 times the areble land of the US, which is why I said we would need everyone to do it. Also it's still useful in smaller amounts, just makes the carbon capture take longer than 10 years. I wanted something that we could implement last year, and would fix this shit by 2032.
Trees are too slow to make any meaningful change in the next decade.