Associated Press: A Sherpa from Nepal who holds the world’s record for scaling Mount Everest said Monday the planet’s highest peak was littered with trash and warned that its glaciers were melting because of global warming. Appa, who like most Sherpas goes by only one name, scaled the peak last week not to draw attention to his own amazing feat — he has now climbed Everest a record 19 times — but to the impact that global warming is having on the majestic site. Glaciers are melting at an …