Rivers have been an essential part of human civilization for millennia, providing water, transport, and fertile land for agriculture. But have you ever wondered which river is the longest on Earth?

In 1846, according to the atlas “Maps of Useful Knowledge,” the Amazon was the world’s longest river, at 3,200 miles; the Nile came in at 2,750. More recently, Brazilian researchers have ...

(The map here, a composite of NASA ... and many scientists are skeptical about its methods. The Nile is still generally credited as the world's longest river by sources from the United Nations ...

WE HUMANS sure love to measure and rank stuff. Over the course of our civilisation, we have measured and ranked pretty much anything worth doing like the biggest continent (Asia), the tallest ...

The longest river in the world is the mighty Nile — the “father of African rivers,” Britannica says. But in Brazil, home to the powerful Amazon River, which cleaves South America more than ...