Ecological diversity in Sunderban is at the threshold of decline. The fragile land here is being swallowed every day by gradual sea level rise, coastal erosion and tropical cyclones. Besides the global cause of sea level rise i.e. thermal expansion of sea water also responsible is the land degrading anthropogenic activity. An unsustainable situation has crept in the deltaic plain when natural capital is being used up faster than it can be replenished.

Lead exposure has long been associated with deficits in IQ among children. However, few studies have assessed the impact of lead on specific domains of behavior and cognition. The authors evaluated the associations between lead and different domains of neurobehavior and their relative sensitivity to lead.