Sanjay Chauhan witnessed monsoon rains lash down over his home and farm in the Indian Himalayas this year with a magnitude and intensity he's never experienced before. "Buildings have collapsed, roads are broken, there were so many landslides including one that has destroyed a large part of my orchard," said the 56-year-old farmer, who lives in the town of Shimla in Himachal Pradesh. "I have not seen anything like this."