A new drilling study has definitively dated the Amazon River at over 11 million years old, and it has held its current form for at least the last 2.4 million years.
The Amazon is one of the two longest rivers in the world, and its flood basin is home to one third of all the species on Earth. Discovering the river’s age is a stark reminder of just how ancient and intertwined the Amazonian ecosystem is, including the immensely rich biodiversity which calls it home.