Earth Temperature Timeline ( xkcd.com )
This seems updated since I first found it years ago....
![](https://mbin.grits.dev/media/cache/resolve/entry_thumb/b2/87/b287fd3665e70a4042c74afbadb596f597128a714c3bf97b782093734edfa71c.png)
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This seems updated since I first found it years ago....