High‑resolution images from orbiting spacecraft have revealed an extraordinary network of over 15,000 km of fluvial sinuous ridges—also known as inverted channels—spanning Noachis Terra in Mars’s ...

A new map shows hidden Martian rivers stretching thousands of miles, offering fresh evidence of a warm, wet ancient Mars.

Four years ago, summer floods in Limburg—in the south of the Netherlands—drastically altered the riverbed of the Meuse, ...