Enlarge / Where beavers set up home, the dams they build profoundly change the landscape. It’s happening in the far north right now.Troy Harrison
It began decades ago, with a few hardy pioneers slogging north across the tundra. It’s said that one individual walked so far to get there that he rubbed the skin off the underside of his long, flat tail. Today, his kind have homes and colonies scattered throughout the tundra in Alaska and Canada—and their numbers are increasing. Beavers have found their way to the far north.
It’s not yet clear what these new residents mean for
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