XKCD often makes us think; the strip’s forays into science and social policy often rank near the top of my personal list of salient and clear educational devices on tough issues.
Here’s a timeline of Earth’s average atmospheric temperature, going back a few years before your mother was born (though she was born a long, long time ago!).
See where this is headed? No one else has done it much better.
I did wonder when I saw this earlier, on September 12: Did the creator of XKCD learn this stuff in Edward Tufte’s course?
Earth Temperature Timeline, From XKCD, September 2016
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Millard Fillmore's Bathtub 