James Hansen:
Per què he de parlar sobre el canvi climàtic

TED2012 · 17:51 · Filmed Feb 2012
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L'expert científic sobre el canvi climàtic, James Hansen, explica la seva història de com es va involucrar en la ciència sobre el canvi climàtic mundial i com en va iniciar el debat. Destaca l'evidència aclaparadora que el canvi ja està passant i perquè això fa que es preocupi tant pel futur.

James Hansen has made key insights into our global climate — and inspired a generation of activists and scientists. Full bio
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