We know that humans can make big changes to the environment. Few species can have a similar impact. But beavers can. At one point, the rodents numbered in the hundreds of millions in North America, they were hunted to near extinction. Now scientists are bringing them back because beaver dams improve water quality, trap and store carbon—and in the aggregate, offer a significant way of storing groundwater in dry places.
Restoring nature with the support of beavers
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