Interestingly enough, 2024 marks 200 years since Carnot first...

Interestingly enough, 2024 marks 200 years since Carnot first formulated the second law of thermodynamics in your chosen home country of France.

But I don't understand why you expect Neanderthals to be up with scientific concepts proven a couple of centuries ago?

You're basically arguing with monkeys that tap away at modern technology someone else built for them and that they don't have a chance of understanding.

Even if they were right about trees vs solar panels, this discussion proves that they *still* don't understand that local heating on the ground isn't the problem - the problem is that due to atmospheric changes heat is leaving the Earth slower than the heat from the sun comes in.