Here's why Mount Everest 'is taller than it should be'

Mount Everest or Sagarmatha , highest peak in the world with an altitude of 8.848 metres is seen in this aerial view next to 6.812 metres high Mount Ama Dablam April 22, 2007. — Reuters

A new study suggests that an event of river “capture” in the Himalayas 89,000...