Highs and lows

I've previously looked at the highest structure and deepest human-created holes on Earth. Now it's the turn of the natural world, with the interesting fact that there's less than 20% absolute difference between the highest mountain and the lowest point of the oceans, with Mount Everest fitting in the Mariana Trench with a couple of kilometres to spare.



If the oceans rise as a result of global climate change then Mount Everest's height above sea level will fall, meaning that climbers will not be able to achieve the heights of their predecessors.