Kalyani Mandal has gone way past hope. Living in Dhoblat Shibpur a coastal village on this island in the Sundarbans estuary her house has been washed away by the sea thrice in 10 years. How many times can you make a fresh start? she asks despairingly. Sagar a large island of 160000 residents at the confluence of the Ganga and the Bay of Bengal perhaps depicts how people are fighting a losing battle against an increasingly hostile sea brought on by global warming. It shows the worst effects of climate change -- coastal erosion rising sea levels unpredictable tidal surges