“Anomalous” heat flow, which at first appears to violate the second law of thermodynamics, gives physicists a way to detect quantum entanglement without destroying it. If there’s one law of physics ...

A healthy brain maintains a harmony of neurons that excite or inhibit other neurons, but the lines between different types of cells are blurrier than researchers once thought.

In the third century BCE, Apollonius of Perga asked how many circles one could draw that would touch three given circles at exactly one point each. It would take 1,800 years to prove the answer: eight ...

These days, large language models such as ChatGPT are omnipresent. Yet their inner workings remain deeply mysterious. To Naomi Saphra, that’s an unsatisfying state of affairs. “We don’t know what ...