China is constantly looking for new ways to minimize flooding in the face of climate change. In recent years, major floods have become a regular occurrence and have turned some neighborhoods into extremely vulnerable waterfront locations. The government is addressing this problem with so-called “sponge cities” that soak up floodwater. The project is currently being introduced in 30 cities, including Shanghai, Wuhan and Xiamen. By 2020, China hopes that 80% of its urban areas will absorb and re-use at least 70% of rainwater.