Why is Cologne Cathedral so dark? Is the water from the Rhine safe to drink? And how can I tell how clean the air is in my city? Lisa and Lena explore these questions in this episode. This time, it's all about environmental protection and,...See moreWhy is Cologne Cathedral so dark? Is the water from the Rhine safe to drink? And how can I tell how clean the air is in my city? Lisa and Lena explore these questions in this episode. This time, it's all about environmental protection and, of course, pollution. Lisa and Lena meet Dr. Leon Barthel, who reveals the secret of Cologne Cathedral's dark appearance. He also shows them an air quality monitoring station, whose current readings can be viewed online. Together, they take a water sample from the Rhine and discover that the water is clean. But it wasn't always like this. For a long time, the Rhine was considered the "sewer of Europe," frothed with whitecaps, dead fish, and a terrible stench. Air quality in Germany was also much worse for a long time than it is today. Environmental problems lead to protests, not just today, but in the past as well. Lisa and Lena meet people who have been campaigning for environmental protection in Germany for many years. Their methods of protest vary, but they all share the same goal: to live on a healthy planet. How did environmental movements arise, and what different forms of protest existed and still exist? Written by
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