Powerful earthquake kills at least 53 in Tibet, rattles Nepal

By Joe Cash and Gopal Sharma BEIJING/KATHMANDU (Reuters) - A magnitude 6.8 earthquake rocked the northern foothills of the Himalayas near one of Tibet's holiest cities on Tuesday, Chinese authorities said, killing at least 53 people and shaking buildings in neighbouring Nepal, Bhutan and India. The quake hit at 9:05 a.m. (0105 GMT), with its epicentre located in Tingri, a rural Chinese county