Even if the answer were "we'll still need 50% from fossil fuels" it still cuts CO2 in half. If the answer were "we still need 10% for unusual cases", it still m

Even if the answer were "we'll still need 50% from fossil fuels" it still cuts CO2 in half. If the answer were "we still need 10% for unusual cases", it still means that fossil fuels stop being the problem, at least for that one country. This isn't insurmountable. It doesn't have to be perfect. Even a real but incomplete effort makes a genuine difference. The problem, unfortunately, remains the US, who has a large and powerful minority who is convinced it's all a hoax. The solution doesn't have to be complete but it does have to be something. With many millions of people actively making it worse, even 100% in the UK doesn't come anywhere near close.