By Niladry Sarkar KOLKATA — In the small village of Nagendrapur, located in the Sundarban Biosphere Reserve (SBR) in the Indian state of West Bengal, a mere 6-foot-wide lane separates a vast wetland used for aquaculture from a cluster of poorly constructed shanties. One of these shanties is home to Roshanara Piyada, her husband, Saidulla Piyada, and their three children. “Every time it rains, saline water from the fishery overflows and floods our home,” said 31-year-old Roshanara while washing dishes at a freshwater pond next to the fishery. “We used to work as agricultural laborers before aqu…