Scientists at MIT have directly captured signs of “second sound” in a superfluid for the first time. This bizarre phenomenon occurs when heat moves like sound waves through an unusual state of matter.

Physicists at MIT have spotted the second sound of a superfluid. Besides being pleasantly alliterative, the phenomenon may explain how heat moves through certain rare materials on Earth and deep in ...

Noise pollution and excessive heat can seem inescapable in L.A. What would the city be without random bursts of fireworks and car sound systems thumping loud enough to shake you from your dreams? And ...