Shell too snug? Hermit crabs have a fix

For decades, biologists have known that hermit crabs forced to live in shells that are too small slow their growth. What wasn't clear was how they did it. New research suggests the answer isn't simply that the crabs eat less. ...

Like humans, great apes think differently from each other

For decades, scientists have been studying the cognition of great apes to understand how our own complex cognitive abilities evolved. Much of the research is based on the idea that if a particular ability—like using gestures ...

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