We’ve all heard it before: “Yeah, but the climate has ALWAYS changed.”

Oh, really? Well, this timeline of Earth’s average temperature shows just how much we’ve influenced the climate. This epic webcomic was created by Randall Munroe, the artist behind xkcd, one of our favorite places for simplifying complicated scientific concepts.

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It’s pretty long, but bear with us.

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You made it! Of course the climate has always changed, but we’re now seeing temperatures never experienced before. File away under: Things To Show Climate Denying Relatives on Thanksgiving.