On the morning of my second surgery, the day after I had found out that the retina had come away again, I couldn’t help thinking about the ladders on Everest and how I had no choice but to do something that frightened me over and over again.
Humans are not meant to survive above 8,000 metres (26,246 feet). Yet people have managed to climb to the highest point on Earth. Melanie explains how it feels to climb Everest and the science behind it.
Climb Update: In the two weeks since we arrived at base camp, we have been up the mountain twice on what are known as “rotations” – climbing successively higher up the mountain to get used to the altitude.