The Rhine used to be a heavily polluted and stinking river. Today, it supplies over 30 million people with high quality drinking water. How was this achieved? And which new threats are emerging for Germany's longest waterway?

On The Green Fence

How clean is your river?

On the Green Fence lives up to its name in looking at complex, often divisive environmental issues from multiple angles. It’s not about greenism, but about delving into the major concerns of our time in an engaging and human way. DW reporter Neil King sits on the fence and explores the role business, society and science play in our transition to a more environmentally friendly world. In so doing, he aims to make sense of issues that affect us all, but which are often over-simplified or convoluted by ideology and lobbyism. On the Green Fence stands for an open-minded, re...