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The idea that artificial intelligence can “reason” is more intuitive than ever. But intuitions can be wrong, and the science is far from settled. The post Is AI Reasoning Right for the Wrong Reasons? first appeared on Quanta Magazine

New calculations seem to have put a 25-year-old particle physics puzzle to rest. But they’ve also created a clash with other experimental results. The post Physicists Solve a Big Quantum Mystery. Now, Old Results Don’t Add Up. first appeared on Quanta Magazine

An organelle discovered inside a microbe inside a cow’s gut helps explain how livestock burps contribute to warming our planet. The post A New Way That a Cow’s Inner World Shapes Earth’s Atmosphere first appeared on Quanta Magazine

One of the most contested issues in astrophysics is our understanding of the Universe’s expansion. Adam Riess discusses why there is disagreement and what might resolve it. The post How Fast Is the Universe Really Expanding? first appeared on Quanta Magazine

Every four years, the math world’s preeminent awards are given to the finest minds of a generation. The young winners — all under 40 on the first day of the year — have reshaped mathematics and theoretical computer science. Here are their stories. The post Fields and Abacus Medals 2026 first appeared on Quanta Magazine