Nobody knows how the climate works, so nobody knows the answer.

However there is one answer - apparently "nothing".

Non-scientists such as Al Gore, Leonardo DiCaprio and the like, harangue the world demanding cuts in CO2 production.

And boy, don't they like to travel to spread the message! (Or go to parties.)

They must be sincere about the message and therefore they wouldn't do anything to make matters worse.

Would they.

And therefore, according to their actions, air travel has no effect on climate change.

I just don't get this "do as I say, not as I do" preaching. Don't you find it hypocritical?