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VIDEO: Culture was once thought to be uniquely human, but scientists are finding evidence that many birds are also cultural creatures. What does avian culture look like? And why does it matter?
VIDEO: Watch a scientific exploration of why old age is often associated with high levels of emotional well-being, even as physiological and cognitive capacity declines
VIDEO: Watch our conversation about how infectious agents are transmitted from one species to another, and what can be done to prevent future pandemics
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