Photo de stock - Eberhard Jochem from the Technical College Zurich gives speeches in honour of the two award winners of the Hamburg science prize 2017 during a ceremony in Hamburg, Germany, 17 November 2017. Xinliang Feng shares the award endowed with 100 000 euros with Klaus Muellen from the Max Planck institute for polymer research Mainz. Photo: Markus Scholz/dpa. - Hamburg/Hamburg/Germany

Photo de stock: Eberhard Jochem from the Technical College Zurich gives speeches in honour of the two award winners of the Hamburg science prize 2017 during a ceremony in.

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