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Math puzzle: A Loopy Holiday Gift Exchange
Solve the math puzzle from our December 2025 issue, in which a holiday gift exchange occurs.
- Animals
Lions have a second roar that no one noticed until now
A machine learning analysis of wild lion audio reveals they have two roar types, not one. This insight might help detect where lions are declining.
- Health & Medicine
A diet low in glutamate may ease migraines
People with Gulf War Illness found relief from migraines after a month on a low-glutamate diet, hinting at a new way to ease symptoms.
- Science & Society
Science News’ Top Reads of 2025
Books about AI, Mars and infectious disease were among our top reads this year.
