Yo Willi it's obvious you're struggling with Lomu's very sensible suggestion for you to start reading climate science, before having your ha'penny's worth.
to help you along, can i recommend A Climate Primer, published by the Massachusetts Institute of Technology.
Willi, you may have taken on board denier guff about global warming stemming from the Milankovic cycles, or some other arcane influence intended to divert you from the reality of what's going on.
rather than being washed around by the ebb and flow of denier bs, you can tap explanations by the world's best scientists at MIT, and as Lomu suggested Berkeley Earth, to set you straight.
climate deniers take great pride in lying and abfuscating, but you don't have to lie to yourself.
You may not have heard of MIT. It's repeatedly ranked among the top 5 universities in the world, and #1 in STEM.