Global environment changes, like ice ages, happen over the course of many, many human lifetimes. It’s absurd to think you or I will detect significant global changes, aside from normal changes related to the seasons, in our relatively short timelines.
Actually, what I have seen (read) is that the process happens very fast, It takes only about ten to twenty years for it to start and the lasting effects are centuries long. The last mini ice age started rapidly and lasted for a very long time. Does it mean that we will be covered in ice in ten to twenty years? No, it means the process starts fast...so the process might take two hundred years to develop fully, or longer. My point is that we can survive globull warming-which was a scam, but we cannot survive a big ice age the way it (we) are now. And the thing runs in cycles no?