Around 10.30am on Sunday, 7 February, a flash flood swept down the Rishi Ganga river. “This is unheard of,” says Dhan Singh Rana, 64, of Lata village in the Niti Valley, a few kilometres upstream from Reni. “Where do I even start?” Shrestha says climate change is going to affect every aspect of Himalayan life, in direct and indirect ways. …