The heaviest rain in Seoul in 115 years has spurred the South Korean capital to revive a $1.15 billion plan to improve drainage after floods exposed how even the affluent Gangnam district is vulnerable to climate change-driven extreme weather.
Experts say the city's capacity to drain water is far behind what's needed to handle a deluge like the one suffered this week. That has disasterous implications for low-lying areas like Gangnam, as these bouts of extreme weather are becoming increasingly common.
