Is climate change reaching a point of no return? | DW News - latest news and breaking stories | DW | 08.08.2018

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Is climate change reaching a point of no return?

Researcher Claire Fyson sees scientists' warning of a Hothouse Earth as a "call to arms." Though the threshold temperature that leads to irreversible changes can't be pinpointed, science can tell us how to stay out of the very-high-risk zone, Fyson says.

Watch video 03:48