Not if, but when

Not just more fires and stronger hurricanes, but coastal flooding that will make hundreds of millions homeless and starving around the globe. Unlike past environmental catastrophes, this one won't pass and the victims know where you live and won't take no for an answer. Resource wars are already commencing in the Middle East. It's only get worse, and fast.

"Nicknamed the “doomsday glacier”, the Thwaites glacier in western Antarctica has the potential to devastate the globe. About the size of Britain, NASA estimates state that if it melted it would increase sea levels by 0.5 meters (1.6 feet). More worrying, however, is the cascade of ice melt it would likely unleash, as the glaciers currently protected from the warming ocean by Thwaites' presence would be exposed, causing a sea level rise that would sink New York City, Miami, and the Netherlands. It's already retreating at an alarming rate, but new research published in the journal Proceedings of the National Academy of Sciences fears this rate could speed up as increasing damage was found to weaken the ice shelf's integrity." 

https://www.iflscience.com/environment/study-finds-antarcticas-doomsday-glacier-is-becoming-more-unstable-as-it-melts/?fbclid=IwAR0L9HuU-JyujvrCAzsYOwN5dVrhbmP0_z-dSugtyUyaPJD_us-9VgIlaEU