Should you stop Flying or go Vegan to prevent Global warming?

I know I'm not going to stop flying because often this is the least onerous and most reasonable way to travel many places on earth. However, going Vegan like Bill Clinton did so he wouldn't die from his "macdonalds" diet in the past might make sense for some people. Why?

Because cow farts and goat farts and sheep farts are a major contributor to global warming along with human farts. All this gas is Methane and this damages the upper atmosphere and contributes to skin cancer, (especially in White people by the way). So, if you are a vegan you are also helping white people not die from melanoma as well.

However, because Global Warming has reached such extreme proportions in the arctic and Antarctic that methane from animals and humans and plants that died millions of years ago are now bubbling to the surface in the antarctic through the ice and tundra, you could (and this has already happened) be killed by smoking a cigarette while walking over a bubbling up of methane through the ice.

So, I guess what I'm saying is likely it's too late to stop the millions of years old people, animals and plants from causing havoc all over already.

The planet is already becoming something different than it has been for at least 40,000 years or more already.

For example, 76 degrees one million years ago was the average temperature (Fahrenheit) at the north pole and it took millions of ferns (which suck up major CO2) from the North pole down to the equator to suck up enough CO2 to bring it down to what we have experienced the last 10,000 years on earth.

Note: By the way jet fuel, gasoline, Kerosene, Diesel is all processed from oil which is literally (old dinosaurs, old plants, millions of years old humans, animals, and stuff like that. So, when you start your car you might be burning a derivative or essence of your ancestors thousands of years ago too along with old dinosaurs and animals and plants.

2nd note: most people fly in planes these days but in the past, people meditated for 2 to 5 years in caves and learned how to levitate if they were gifted enough to become levitating masters.

However, most people are no longer psychologically suited to do something like this in this age of media. But, some still are suited that wish to do this today.