Nepal urges Everest climbers to bring back empty oxygen tanks

Nepal has urged climbers on Mount Everest to bring back their empty oxygen canisters instead of abandoning them on mountain slopes amid a shortage, an official said. These canisters "can be refilled and used for the treatment of...COVID-19 patients who are in dire needs", he added. The country issued 408 climbing permits for Mount Everest for the April-May climbing season.