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Solar trees: from the ground up

May 22, 2015

The German Pavilion at the Milan expo, is a feast of technology. Some of it (seemingly) low-tech, some of it hi-tech. Its solar trees are clearly hi-tech, and architect Lennart Wiechell tells us all about them.

https://p.dw.com/p/1FUGz

Interview: Zulfikar Abbany, Milan