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 ...

On the windowsill of a science laboratory high above the clamor of the Harvard Medical School campus, tidy rows of sunflower, avocado, and lemon plants bask in the afternoon sun. Every day, scientists ...

What does a scientist look like? A bright-eyed intellectual donning a white lab coat and goggles? Often, yes. But these days, they could look like a stack of computer servers softly humming away in an ...