There's more evidence that water once flowed on Mars with the discovery of an ancient river delta deep below the surface.

For decades, the strongest evidence for the earliest human settlement in the Americas came from a site in Chile called Monte Verde. Scientists found echoes of human presence dating back to around ...

Renewable technologies need a multitude of critical minerals. The seabed could supply these riches. But at what cost?

Multiple spacecraft and rovers have now detected what appears to be an extensive network of ancient river channels hidden beneath the Martian surface, buried under layers of lava and sediment that ...

Using NASA’s ground-penetrating radar, the Perseverance rover has discovered underground remnants of an ancient river delta on Mars, providing one of the most compelling pieces of evidence that water ...

Engineers modify Bucks Mill Dam to restore river function, boost fish and wildlife habitat, manage sediment flow and keep lake levels steady.

My fixation on a small, desolate locale in the heart of the Sahara Desert started with a single line buried in a 630-page ...