Llamas are cute, but what makes them even better human companions is their gentleness and empathy. People from their native habitat, the Andes Mountains in South America, dub them “silent brothers”.

Russell has a PhD in the history of medicine, violence, and colonialism. His research has explored topics including ethics, science governance, and medical involvement in violent contexts. Russell has ...

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Teeth can tell us a lot about the evolution of prehistoric humans, and our latest study of one of our species' close relatives may finally resolve a long-standing mystery. The genus Paranthropus is ...