Then, in 1971, a National Geographic expedition led by Loren McIntyre identified the snow-capped peak of Mismi (map) as the headwaters of the Apurímac River and the ultimate source of the Amazon.

An underground river has now been discovered beneath the mighty Amazon River, flowing miles below the surface. Scientists detected this river after they analyzed data from 241 wells that Brazilian ...

NASA released a map showing the newly proposed source of the Amazon River, a change that would make it the longest river in the world. Last month Brazilian researchers proposed Mount Mismi, a snow ...

A major tributary of the Amazon River fell to its lowest level in over a century on Monday at the heart of the Brazilian rainforest as a record drought upends the lives of hundreds of thousands of ...

The Negro River drains about 10 per cent of the Amazon basin and is the world's sixth-largest by water volume. Manaus, the biggest city in the rainforest, is where the Negro joins the Amazon River.

In 2021, towns in Amazonas, Brazil, along the Amazon River and its tributaries flooded due to heavier-than-usual rainfall. Just two years later, the riverbeds turned to sand during months of drought.