The Kosi River in the Himalayas once captured part of a tributary: the Arun River. It set off a chain of geological events that reshaped — and is still reshaping — the landscape, a new study has found.

Mount Everest is Earth's tallest mountain - towering 5.5 miles (8.85 km) above sea level - and is actually still growing. While it and the rest of the Himalayas are continuing an inexorable uplift that dates back to their birth roughly 50 million years ago when the Indian subcontinent collided with Eurasia,

Rapid erosion caused by a geological act of “piracy” tens of thousands of years ago may have raised Earth’s crust and elevated Mount Everest by as much as 50 metres

Mount Everest is getting taller due to an unlikely culprit: a river. An international team of researchers led by University College London found that Mount Everest’s height is boosted by 15 to 50 meters (50 to 164 feet) due to erosion from a nearby river gorge.

Mount Everest has grown an additional 15 to 50 meters due to the erosive forces of the Arun River. This erosion triggers isostatic rebound—a process where the Earth's crust rises due to reduced surface mass,