Nepalese mountaineer Nima Rinji Sherpa has achieved a remarkable feat by becoming the youngest person in the world to summit all 14 peaks above 8,000 meters. He reached the summit of Mount Shishapangma in the Xizang autonomous region, China, on the morning of Oct 9. With this accomplishment, Sherpa has overtaken his uncle, Mingma Gyabu Sherpa, for the world record. …