At least 56 people have died in floods in India's northeast, with the army warning that munitions washed away by the deluge pose a public safety risk. Violent torrents struck Sikkim state after the bursting of a glacial lake. Climate scientists warn that similar disasters will become an increasing danger across the Himalayas as global temperatures rise and ice melts. The floods have caused extensive damage to infrastructure and displaced thousands of people. Glacial lake outburst floods are likely to become more common in the future due to climate change.