Mark Wollschlager December 5, 2022 2:40pm Beavers made North American landscape after the last ice age ( and probably a few times before that). Truly a creature to co-exist with rather than see as a competitor. #BeaversAreComing #nature #hanginthere ars technica As the Arctic warms, beavers are moving in Scientists are just beginning to study the impacts of beaver dams on the tundra.