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  1. Science & Society

    Looking for a job? Lean more on weak ties than strong relationships

    A 50-year-old social science theory gets put to the test in a new study using data on 20 million LinkedIn users.

    By Sujata Gupta
  2. Health & Medicine

    Poliovirus is spreading in New York. Here’s what you need to know

    With signs of poliovirus spreading in a handful of counties in New York, unvaccinated people could be at risk of paralytic polio.

    By Erin Garcia de Jesús and Aimee Cunningham
  3. Anthropology

    Humans may have started tending animals almost 13,000 years ago

    Remnants from an ancient fire pit in Syria suggest that hunter-gatherers were burning dung as fuel by the end of the Old Stone Age.