South Korea's Effective Flood Defense System

The water was already knee-deep when the emergency alerts went out. Streets disappeared

first. Then basements. Then entire neighborhoods. And for millions of Americans,

this scene feels painfully familiar now. Floods that used to happen once in

a generation are showing up every few years, sometimes every few months.

Cities scramble. Officials argue. Repairs take years. And by the time the next storm hits,

nothing has really changed. But here’s the part almost nobody talks about.

There is a country that faced this exact problem years ago. Not hypothetically.

Not in theory. In real life. With real cities at risk. And instead of waiting