I've seen, with my own two eyes, the terminal moraines and the photos on a sign where a glacier was 100 years ago, then hiked a couple kilometers up a valley to

I've seen, with my own two eyes, the terminal moraines and the photos on a sign where a glacier was 100 years ago, then hiked a couple kilometers up a valley to where it is today, on multiple continents. I've seen, in my lifetime, dramatic shifts in the climates of places I've lived. If that's not climate change, what is?