A 140-year-old shipyard that became one of the United States' most polluted sites, a wasteland contaminated by heavy metals and radiation, is to be reborn as a green technology complex housing a climate change think tank, under a United Nations-backed project scheduled for completion in 2012. Since the early 1990s, the Hunters Point Shipyard on San Francisco Bay, once the US military's largest facility for applied nuclear research, has been given a $500-million clean-up in a projected headed by the UN Global Compact group and the US Environmental Protection Agency. "California, in general, and San Francisco, in particular, have been at the forefront of environmental sustainability for many years and all the right ingredients are here," said Gavin Power, Deputy Director of the UN Global Compact, which seeks to encourage businesses to be better stewards of the environment." When it is completed in 2012, the complex will house a climate change think tank called the UN Global Compact Sustainability Center, which will work to find green solutions to the environmental challenges facing the world, a conference centre and UN offices. The Global Compact, launched in 2000, is supported by six UN agencies, including the UNEP. Established as a commercial shipyard in 1870, Hunters Point was appropriated by the US Navy at the beginning of World War II and became one of the Navy's major shipyards. After the war, it was home to the Naval Radiological Defense Laboratory.