River deltas often support high population densities, and globally are home to over 500 million people. A large proportion of these delta populations experience extremes of poverty and are severely vulnerable to environmental degradation. DELTAS is looking at the relationship between ecosystem services and human well-being and health in the Bangladeshi portion of the Ganges-Brahmaputra delta - as well as understanding how it may evolve in the future, and what that tells us about other populous delta regions around the world.