Mars used to have massive flowing rivers twice as wide as Earth’s

Mars is now a freezing desert, but its surface once had flowing water and it turns out its rivers were wider than those on Earth Source: https://www.newscientist.com/article/2197973-mars-used-to-have-massive-flowing-rivers-twice-as-wide-as-earths/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home