Mount Everest’s towering peak continues to rise, not just because of tectonic forces but due to an unexpected influence from a nearby river. A new study published in Nature Geoscience has revealed how the geological interplay between Everest and an eroding river system has added height to the mountain over the past 89,000 years. Researchers from University College London (UCL) and the China University of Geosciences have found that isostatic rebound—a process where land rises after material is removed—has caused the mountain to grow by up to 50 meters (164 feet) over this period. The study hig…