Life after people, Chicago edition

We somehow missed posting this fascinating video when it first came around.

After several hundred years there’s almost nothing natural about Chicago’s natural environment. Human effort on a massive scale, most of it unseen by almost all of us, keeps us from reverting to a natural environment.

What would happen if that effort ceased is the subject of the video, which was published when we still had a Sears Tower. You can see the series that inspired the video at History.com.

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