@trinsec
This survey was done cause it was speculated that the Himalayas were affected due the 2015 Nepal earthquakes.
@trinsec
Until now Nepal considered the height to be 8,848 metres from a survey conducted by India in 1954.
Now Nepal China jointly surveyed again and changed the official height.
@mur2501 So it took like almost 70 years to re-check. Ok, 86cm in almost 70 years isn't as alarming as 86cm in just one year. That's about close to 1cm per year. Sounds about right. :) With probably a little growth spurt in 2015. Growing pains in the mountains.
@trinsec
Well scientifically the heights of the Himalayas are changing every second (by a nanometres maybe) but you know getting things official is a slow painful and political process. Also the summit of the Mount Everest serves as the border between Nepal and China so both sides have to co-operate for making stuffs official.
@mur2501 The mountains are growing? THE MOUNTAINS ARE GROWING?!?!? ARE WE GETTING SWALLOWED UP!?
That said, yeah ok, not really that surprising. It's actually how mountains are formed. :D When was the last checkup? In which timeframe did they grow 86cm? That's probably the more interesting part to know. ;)