Q&A: Is hopelessness a US public health crisis?

How can the world's wealthiest country be so poor in hope? It's a question that a University of Maryland economist is asking about the United States, where unprecedented levels of despair have manifested in a national mental ...

Gray wolf personality research uses puzzle boxes, rain sticks

Researchers using puzzle boxes, rain sticks and papier-mâché balls are studying captive gray wolves at the Oakland Zoo and the California Wolf Center to evaluate personality and problem-solving skills of the endangered ...

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