An estimated 11% of global greenhouse gas emissions are due to tourism, and that’s predicted to double by 2050, the year scientists have forecast as the tipping point for all sorts of ecological disasters. By then, our planet will have warmed 1.5C (2.7F) above preindustrial times. By the end of the century, the figure looks to be 2C (3.6F), with that half-degree making a huge difference. If emissions are left unchecked, this warming will accelerate, bringing forth a distinctly heightened level of cataclysmic weather patterns.

https://www.bloomberg.com/news/articles/2022-11-14/how-tourism-can-hit-net-zero-by-2050-an-unrealistic-but-not-impossible-solution