As subterranean transit projects have crossed paths with ancient ruins, archaeologists have revealed secrets buried beneath global cities from Istanbul to London. In this issue of Discover we delve into the artifacts and what they represent. Next, we take a cosmic tour of super-Earths: our planet’s bigger, weirder, and possibly habitable cousins.
Also in this issue: doctors are using HD imaging to map traumatic brain injuries in a way never before possible. Will it improve treatment?
Plus: What do feces and fossilized dental plaque have in common? Is California’s polluted air causing genetic changes? And how much do you really know about your inner voice? You’ll find the answers and much more inside this issue of Discover.