XKCD is not a comic book that you find at your local shop, but it graces XKCD.com thrice weekly. You may have passed it up, as the art appears simple (it isn’t), the characters aren’t superheroic (kinda sorta), and the situations aren’t sci-fi/fantasy (keep reading).

When people say "the climate has changed before" these are the kinds of changes they´re talking about.

Guide to figuring out the age of an undated map.

xkcd: 1612

xkcd:1609

xkcd: 1607

xkcd: 1606

xkcd: 1605

xkcd: 1604

xkcd: 1603

xkcd: 1602

No one talks anymore.

xkcd: 1600

xkcd: 1599

xkcd: 1598

xkcd: 1597

xkcd: 1596

xkcd: 1595

xkcd: 1594

xkcd: 1593