A cloud of rubidium atoms aboard China's space station has reached 9.7 picokelvin, the coldest known human-made substance. Scientists explain why the experiment needs microgravity and what it could mean for quantum research.
Two Chinese research teams report advances in ceramic materials: a strontium-bismuth titanate that stores more energy without breaking down, and a centimeter-scale ferroelectric perovskite wafer that could make X-ray detectors more efficient.
A classic Chinese comedy routine about two drunk men and a flashlight turns out to hide some of modern physics' thorniest questions. The answer involves photons, momentum and why the beam vanishes the moment the switch clicks off.
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