They did this in Futurama. We just need a really really really big piece of ice to drop into the ocean every year

While it’s worth researching, our quickest and most foolproof methods of drawing down carbon are simple things, like educating women worldwide, getting more people on mass transit and bikes, and cutting industrial emissions from oil and gas, construction, food, plastics and other waste, such as crypto and fast fashion.

Edit: if you are feeling depressed about it, I remember reading this book as part of a class and it being pretty interesting on the stuff we can do today to fix the climate. Not moonshot ideas like orbital mirrors or direct air capture at the planetary scale

https://bookshop.org/p/books/drawdown-the-most-comprehensive-plan-ever-proposed-to-reverse-global-warming-paul-hawken/15277859?ean=9780143130444

Cool! I’ll get started on building Snowpiercer then