Camp X-Ray — with its kennel-like cages that were used for about four months when Guantánamo opened — is now overrun by vines, ... live in concrete-walled prisons called Camps 5 and 6.

A team of researchers at MIT’s Lincoln Lab have created a radar array that provides a realtime picture of what’s happening on the other side of solid concrete walls, even when they’re eight ...

At beamline 6-BM, they used a technique called X-ray diffraction to search for signs of paper and vellum inside the concrete. “First we scanned a different copy of the book itself, the book that is ...