When the monsoon rains came last September, they swept away most of the village of Panauti, in the foothills of the Nepali Himalayas. The Roshi River overflowed after the unprecedented rainfall, triggering landslides and destroying most of the roads and bridges. Peering through the thick blanket of relentless rain “felt like waiting for morning to arrive so we could see the world again”, says Bishnu Humagain. “We lost everything – our home, our agriculture, and all of our belongings.” In Kathmandu, 20 miles away, 244 people died as the capital recorded its highest rainfall in more than half a century....