Guardian: Until last week Khaista Rehman owned a fabric shop and lived in a brick-built home with his family. But the floods that devastated north-west Pakistan, claiming about 1,500 lives so far, have destroyed his home and washed away his business. Rehman, a 26-year-old father of four, now shares a single room with 33 members of his extended family in a school building converted into a makeshift camp. “My house was two kilometres from the river,” he said. “The water crossed my house, …