In the 70s when I became a bit of an environmentalist it was fear of a second little ice age and the Atlantic Escalator stopping. Oh and the cry was zero population growth.

Thing is climate change is a valid description as long as one knows the climate is always changing and never the same in planet time not human. Moon, earths orbit and axis tilt, and volcanoes shape our weather. If one can live 10k years in the future the Sahara will bloom and upper Africa rivers now dry will run again. All about earth's orbit and axis tilt.

It did not gather much attention but just a bit back in 2022 a under sea volcano went off and it was in the top ten in human times but we lucked out as it was under water. https://www.science.org/content/article/massive-undersea-eruption-filled-atmosphere-water