For most people, reaching the summit of the world’s highest mountain once would be achievement enough.
But Kenton Cool, the Briton with the most ascents of Mount Everest to his name, has now broken another record – by becoming the first person to send a tweet from the summit.

The 37-year-old, from Fairford, Gloucestershire, marked his ninth ascent of Everest by posting his message on social networking site Twitter.
The feat became possible after the Nepalese mobile network operator Ncell installed a 3G station at the mountain’s base camp last October.
Cool wrote: ‘Everest summit no 9! 1st tweet from the top of the world!’
He also told technology website mashable.com: ‘I’ve climbed Everest before but have never been able to share the exhilaration I experience when I reach the top with those back home.’