In northern Pakistan, a massive lake of melt water from a Himalayan glacier burst its banks Saturday, sparking a flash flood that swept away a major bridge and damaged homes and businesses. Pakistan’s climate change minister warns dozens of other glacial lakes are threatening to inundate cities and towns downstream. Pakistan and India just experienced their hottest month of April in over a century of record-keeping, with temperatures soaring to more than 120 degrees Fahrenheit in parts of South Asia.