Towering limestone cliffs rise above the turquoise waters of southern Thailand as we prepare to step off Ton Sai Wall. The jungle clings to the rock face while the Andaman Sea opens wide beneath us, ...

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 plaintiffs accuse operators of violating part of a January court order and call for a "reset of the case." ...

Of all the materials you can use for your retaining wall, natural stones are some of the most durable and beautiful. Here are ...

Melissa Quinn is a senior reporter for CBSNews.com, where she covers U.S. politics, with a focus on the Supreme Court and federal courts. Washington — Democratic Sen. Mark Kelly of Arizona filed a ...