The Curious Case of the Shrinking Moose Skulls

The Curious Case of the Shrinking Moose Skulls
AP Photo/Michigan Tech University, Rolf Peterson, file

Many of the residents of Michigan's Isle Royale, an archipelago in Lake Superior, are moose. They tromp through the forest to nibble on thimbleberries, or stoop in creeks to slurp aquatic plants. Their ranks have tripled in the past decade, and, just as steadily, their skulls have shrunk.

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