Nature
In recent years, measures proposed to address urban flooding caused by extreme rainfall often demand substantial investment, restricting their broad implementation. This study quantitatively assessed the inundation situations of 138 capital cities under both normal and extreme rainfall conditions. Using machine learning techniques, we found that grey infrastructure—closely commensurate with a city’s economic development—dominates flood reduction during normal rainfall events. Click here to read the story. Click the following link for more information on Flood.