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  1. Readers react to Betelgeuse’s buddy, the 2024 Nobels and small nuclear reactor waste

    By Science News Staff
  2. Climate

    2024 was Earth’s hottest year on record, passing a dangerous warming threshold

    Global temperatures were the hottest on record in 2024; it was the first year where the average temperature topped 1.5 degrees Celsius above preindustrial times.

    By Carolyn Gramling
  3. Health & Medicine

    AI could transform health care, but will it live up to the hype?

    AI has the potential to make health care more effective, equitable and humane. Whether the tech delivers on these promises remains to be seen.

    By Meghan Rosen and Tina Hesman Saey
  4. Humans

    How child soldiers heal after the trauma of war

    For more than two decades, Theresa Betancourt has studied Sierra Leone’s former child soldiers.