On day six of Nepal’s tragedy, life triumphed as rescuers pulled an 18-year-old man from the rubble of a multistory residential building in one of Kathmandu’s hard-hit neighborhoods. A large crowd erupted in cheers as Pemba Tamang was carried out on a stretcher. He was wearing a New York shirt and blue neck brace, was blanketed by dust and had the look of a deer in the headlights. His rescuer, Inspector Lakshman Basnet of the Nepalese Armed Police Force, said Tamang was responsive and showed no apparent signs of serious injury. He was given an IV drip and rushed from...