Nepal and China have confirmed that Mount Everest is officially higher than previously thought. The joint announcement settles a long-running conflict over the height of the world’s tallest peak that straddles the countries’ shared border. Kathmandu and Beijing each sent surveyors to the summit, and agreed that the official height is 8,848.86 metres, which is 0.86 metres higher than the previous height, agreed upon in 1954.