Geologists studying ancient desert rocks have stumbled on a microscopic tunnel system that looks uncannily deliberate, a lacework of hair-thin tubes that slice through solid stone in repeating ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. Strange carvings found on Peruvian rocks may have been created by ancient humans that were tripping out, researchers have ...

Long ago, when Romans wanted to build a new temple, they would head to the nearby quarries of Tivoli, chisel out blocks of porous rock called lapis tiburtinus — now known as travertine — and float the ...