Indeed the warming is a natural event. The glaciers melted long before humanity could make any difference. The new bit is that we are helping it along at what

Indeed the warming is a natural event. The glaciers melted long before humanity could make any difference. The new bit is that we are helping it along at what is probably an unprecedented rate. So it's not about the change. It is about the rate of change. When I was born the atmosphere had ~314 PPM of CO2. It is now north of 415PPM and going up ~2.5PPM per year. CO2 is a greenhouse gas. Now how could that relate to us requiring over 95,000,000 barrels of oil PER DAY to run our civilization? (it is closer to 98M in 2021) https://www.statista.com/statistics/265203/global-oil-production-since-in-barrels-per-day/#:~:text=The%20level%20of%20oil%20production,from%20biomass%20and%20coal%20derivatives https://www.statista.com/statistics/265203/global-oil-produc.... For perspective do some back of the napkin math on the height 98,000,000 barrels of oil would be if you made a 100x100 base of barrels and stacked them vertically. Standard drums have inside dimensions of 572 millimetres (22.5 in) diameter and 851 millimetres (33.5 in) height. (remember that's per day) We have in all probability made the time when coastal cities are flooded happen sooner and it is highly unlikely that we can improve the situation very much in the short term.