Rescue helicopters airlifted stranded climbers down to the Mount Everest base camp after a powerful earthquake sparked a deadly avalanche that killed more than a dozen people and left many others trapped. A Belgian climber said rescuers had begun evacuating people during the morning hours from Camps 1 and 2, which sit at altitudes of more than 20,000 feet, with two people allowed per shuttle. The rescue efforts were made possible thanks to clear weather, officials said. At least 17 people, including three Americans, were killed and 61 others injured on the world's highest peak during the massive avalanche.
