around of forest areas. This, coupled with an around rise in surface water temperatures and increased levels of salinity have posed a problem for the survival of the indigenous flora and fauna. The Sundari trees are exceptionally sensitive to salinity and are being threatened with extinction. Loss of the mangrove forest will result in the loss of the protective biological shield against cyclones and tsunamis. This may put the surrounding coastal communities at high risk. Moreover, the submergence of land mass have rendered up to 6,000 families homeless and around 70,000 people are immediately threatened with the same. This is causing the flight of human capital to the mainland, about 13% in the decade of 2000–2010. A 2015 ethnographic study, conducted by a team of researchers from Heiderberg university in Germany, found a crisis brewing in the Sunderbans. The study contended that poor planning on the part of the India and Bangladesh governments coupled with natural ecological changes were forcing the flight of human capital from the region Hazards Natural hazards According to a report created by UNESCO, the landfall of Cyclone Sidr damaged around 40% of Sundarbans in 2007. Human made hazards In August 2010, a memorandum of understanding was signed between Bangladesh Power Development Board (BPDB) and India's state-owned National Thermal Power Corporation (NTPC) where they designated to implement the coal-fired Rampal power station by 2016. The proposed project, on an area of over 1,834 acres of land, is situated north of the Sundarbans. This project violates the environmental impact assessment guidelines for coal-based thermal power plants. Environmental activists contend that the proposed location of the Rampal Station would violate provisions of the Ramsar Convention. The government of Bangladesh rejected the allegations that the coal-based power plant would adversely affect the world's largest mangrove forest. On 9 December 2014 an oil-tanker named Southern Star VII, carrying of furnace oil, was sunk in the Sela river of Sundarbans after it had been hit by a cargo vessel. The oil spread over area after the clash, as of 17 December. The slick spread to a second river and a network of canals in the Sundarbans and blackened the shoreline. The event was very threatening to trees, plankton, vast populations of small fishes and dolphins. The event occurred at a protected Sundarbans mangrove area, home to rare Irrawaddy and Ganges dolphins. Until 15 December 2014 only of oil from the area