Historically, data has shown that "climate change has been shaping the Delta and its socio-economic development" and that such socio-economic development in the region "has shaped its geography and built environment, which, however, are not adaptable to future climate change".[1] Thus, it has been stated that "It is imperative to adopt policies and programs to mitigate and adapt to climate change" in the YRD, specifically, policies that are aimed at reducing the impact of particular climate threats based on the YRD's geography. This includes the region's current infrastructure in the mitigation of flood disasters and promotion of efficient energy usage at the local level.[43]