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  1. Health & Medicine

    During an allergic response, some immune cells digest others

    Mast cells lure and trap other immune cells during allergic reactions, using their compounds to increase inflammation in a process dubbed nexocytosis

    By Caroline Hemphill
  2. Archaeology

    The oldest known ritual chamber in the Middle East has been found

    Engravings and other evidence suggest ancient humans attended religious ceremonies in the cave as early as 37,000 years ago.

    By Bruce Bower
  3. Artificial Intelligence

    Generative AI is an energy hog. Is the tech worth the environmental cost?

    Generative AI and the hype around it has rung in excitement and alarm bells this year. Here’s how to consider climate, energy and AI's intersection.