Photo: Gregor Bader The Mgwayiza Valley in Eswatini A new study has shown that as early as the Stone Age, people in Africa ...

Natural stone such as marble, onyx, travertine, and slate can add a touch of elegance to your home’s entrance hallway, kitchen counters, bathroom vanity and fireplace mantel. But many people shy ...

The natural process of rock weathering could be emitting as much carbon dioxide (CO 2) into the air as the world’s volcanoes.A study published October 4 in the journal Nature finds that natural ...