“This has played havoc with the lives of the locals, who are poor farmers or fisherfolk and given rise to large-scale displacement, with islanders either trying to relocate to drier parts or fleeing altogether,” says environmental activist Jayanta Basu, who has been trying to bring the issue to the notice of authorities for the past 15 years. He points out that when Cyclone Aila ripped through the Sundarbans in 2004, killing hundreds and destroying thousands of homes, it demonstrated the magnitude of the problem—that manmade global warming had rendered the Sundarbans too vulnerable to withstand the effects of powerful natural calamities, unlike in the past. “The irony is that the people of the Sundarbans have contributed absolutely nothing to the carbon footprint responsible for global warming,” Gupta notes. In fact, other causes that have exacerbated erosion in the Sundarbans have also originated elsewhere. WWF scientist Anurag Danda explains that the landmass of the Sundarbans has traditionally depended on the silt that is carried to it by the Ganga, the main river feeding the delta. In recent decades, the thinning landmass is starved of this vital nutrient, for by the time the river arrives at the delta, its original course is subjected to so many upstream diversions that it just doesn’t carry enough silt.