Why Sweden built a tunnel for fish

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We're destroying our environment at an alarming rate. But it doesn't need to be this way. Planet A explores the shift towards an eco-friendly world — and challenges our ideas about what dealing with climate change means. We look at the big and the small: What we can do and how the system needs to change. Every Friday we'll take a truly global look at how to get us out of this mess. If you have any story ideas or leads, please contact us at [email protected]. This is a Deutsche Welle YouTube channel. Deutsche Welle is Germany's international broadcaster, producing TV, radio and internet programming for you in 30 languages – wherever you are in the world. Channel lead: Kiyo Dörrer Supervising editors: Kiyo Dörrer, Joanna Gottschalk, Malte Rohwer-Kahlmann