Scientists have created a new kind of quantum device that can turn electricity into something unusual: tiny packets of sound ...

Heat is not supposed to behave like this. In everyday life, warmth seeps and diffuses, spreading from hot to cold in a slow, smearing process that never looks anything like a crisp sound wave. Yet ...

Usually, when something gets warmed up, heat tends to spread outward before eventually dissipating. But things are a little different in the world of superfluid quantum gas. For the first time, MIT ...

Not in a way humans can hear, but in a newly documented study, stressed plants were found to release bursts of ultrasonic ...

In the world of average, everyday materials, heat tends to spread out from a localized source. Drop a burning coal into a pot of water, and that liquid will slowly rise in temperature before its heat ...