Actually, I think that Climate Change is real and that air travel is contributing to it and possibly even to a significant level.
I also read with interest that ships are particularly dirty and no one has tried any serious attack on them just yet ...
As I say, mankind WILL trash the planet. It makes zero difference whether we do so in 5/55/5000 years, we will ruin this planet and billions will die. I have no concern whether it happens in my life time or not because it cannot be stopped. The very idea that countries/companies can work for the greater good is laughable! The politicians have no choice but to sound concerned but they know that nothing can change the behaviour of a species that has been so successful at dominating the planet. So - business as usual.