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Think your city's skyline is big? That's cute.

Illustration for article titled Think your citys skyline is big? Thats cute.

Here's how the skylines of Toronto, Chicago, Boston and Montreal compare against the icesheets covering those locations during the last ice age.

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If the ice slabs of our current ice age were suddenly as thick and extensive as those of Earth's last major glaciation, anyone living in an area colored white would be instantly crushed and buried forever (or at least until the region thawed out):

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Illustration for article titled Think your citys skyline is big? Thats cute.

The above map comes from "The Laurentide and Innuitian ice sheets during the Last Glacial Maximum" by Dyke et al., which Munroe used as reference for the webcomic. The units on the figure's topographical high points are given in meters.

[XKCD / Quaternary Science Reviews]

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DISCUSSION

Sinestro42
Sinestro42

I can't help but think that a few hundred meters of ice would only improve both Chicago and Boston.