13-year - old Californian , to be youngest to climb world 's highest mountain . ` ` It 's both physically and technically hard , '' he says . But he is learning a lot about geography and history of Nepal , Nepal .
13-year-old Californian aims to become youngest to climb world 's highest mountain . `` It 's both physically and technically hard , '' he says . But he is learning a lot about culture and people of China , Nepal .