Two limestone rock walls narrow to a tiny crevice near the Red Waterfront Trail at Lake Mineral Wells State Park and Trailway. Lichens and moss cover the rock face, and a few thorny bushes grow by the ...

A new species of lizard that finds itself at home—and very much camouflaged—on limestone rocks and jagged pinnacles has been discovered in central Laos. Granted, spotting it in the photo is relatively ...

You would have a hard time finding these common Earth rocks on our neighboring planets. Here’s what makes our landscapes so unique. Limestone landscapes, like this one in the Stone Forest in China’s ...

Q: Why would anyone think people would be interested in daily updates on a huge barge load of ordinary limestone rock making its way down the Tenn-Tom Waterway from north Alabama to the coast? A: ...