Newsroom Tokyo S2015E144 - Against the Flow

Cheonggye Stream, which flows through the center of Seoul, is a popular place to relax. Its clean water is home to many birds and fish. But just 12 years ago, it was an eyesore. Its polluted, filthy water was more of a trickle than a flow. Now, 10 years after it was completed, it's an internationally recognized regeneration project.