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A new DNA analysis of skeletal remains from the Medici family solves a 400-year-old mystery, confirming that Grand Duke Francesco I de' Medici and his wife died of malaria, not arsenic poisoning as long rumored.
Scientists argue that social media bans for teenagers lack scientific evidence and may pose risks, based on a review of experimental studies showing weak or harmful effects in adults, with no studies on under-16s.
A new study reanalyzing old footage shows that beluga whales exhibit behavioral hallmarks of mirror self-recognition, a test of self-awareness, adding them to a short list of species that pass the test.