PBS NewsHour

Why climate change is an 'all-encompassing threat'

Although a candidate just entered the 2020 presidential race with a platform centered on climate change, some experts say Americans aren’t fully aware of the scope and seriousness of global warming. Among them is David Wallace-Wells, who argues in a new book that the severity of the climate crisis has not yet been acknowledged, let alone addressed. He sits down with William Brangham to discuss.

Why climate change is an 'all-encompassing threat'

7m 18s

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