In case you run into someone offering alternative "scientific" explanations for climate change that try to exclude human industry and the burning of fossil fuels, this article is a great resource...
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It starts as a reasonable question: If the Earth's climate changed before humans existed, how can we be so sure the current change is due to us and not something natural?

To answer that question, we need to understand what caused the natural changes of the past. Fortunately, science has a good handle on the causes of Earth’s natural climate changes going back hundreds of millions of years. Some were cyclical; others were gradual shifts or abrupt events, but none explain our changing climate today.

FULL ARTICLE -- https://arstechnica.com/science/2023/03/all-the-ways-the-most-common-bit-of-climate-misinformation-is-wrong/

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