James Hansen: Why I must speak out about climate change

Por Plicatus EN en Cambio Climático 1370 views 13th Octubre 2016 Duración del video: 00:17:52
Der renommierte Klimaforscher James Hansen berichtet, wie er in die Wissenschaft zum und die Debatte über den Klimawandel involviert wurde. Er erklärt dabei ...

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