We usually think of materials based on our experience in the natural world. For example, something that’s light is usually fragile (like a feather) or something heavy is usually strong (like a brick). But what if we could engineer a material that had c…

The Defense Advanced Research Projects Agency (DARPA) is hosting an in-person gathering in San Francisco Feb. 21-22 to engage with science and technology companies, universities, and other research and engineering organizations interested in exploring …