http://www.newsweek.com/mars-valleys-barren-surface-carved-huge-floods-billions-years-ago-loire-vallis-water-1634606

Massive floods from overflowing and rupturing lakes carved deep chasms into the face of Mars during its ancient history, according to new research.

The research, led by scientists at the University of Texas (UT) at Austin, could grant insights into how the now dry network of river valleys formed across the Martian surface.