The Amazon River once flowed westward, creating the Pebas System, a massive wetland teeming with diverse life. Shaped by tectonic shifts and Andes uplift, this ecosystem hosted unique species like enormous crocodilians and early mammals, some adapting to brackish conditions.
What Happened When the Amazon Flowed Backward?
Related Posts
Scientists Studied an Egg Fossil in China—And Found a Baby Turtle Still Inside
It should come as no surprise that fossils, while remarkably rare in perspective, are truly one of the…
September 8, 2021
Humans have been altering nature for thousands of years – to shape a sustainable future, it’s important to understand that deep history
An archaeologist takes bog samples in Germany for analysis of past civilizations and what they cultivated. Stefan Puchner/picture…
May 28, 2024
Following a fungus from genes to tree disease: a journey in science
Pablo Rodriguez Merkel/Shutterstock Brenda Wingfield, University of Pretoria Anyone who reads even a little about science and technology…
July 20, 2022
Study Reveals Los Chocoyos Supereruption Did Not Trigger Ice Age
At a Glance An international team of scientists has uncovered new evidence about the global impact of the…
March 24, 2025
