Limestone pavements were formed more than 300 ... damaged by people removing the stone for building or for decorative rockeries. Individual sites were designated as reserves or sites of special ...

Elon Musk drew attention to a decades-old converted underground limestone mine in Pennsylvania his Department of Government Efficiency (DOGE) team stumbled upon that is still being used to process ...

in an old limestone mine in Pennsylvania.” Really and truly. During a briefing in the Oval Office, Musk gave more details, explaining that the clunky, decades-old system means that “the most ...