Climate emergency
We hear about climate impacts around the world, and the fears that warming will be worse than previously said.
Category 5 hurricane Otis, which devastated Acapulco, was supercharged by global warming; hurricane expert Kerry Emanual tells Science in Action.
Also, Brazilian ecologist Erika Berenguer has witnessed the destruction caused by the prolonged drought in Amazonia, where the rivers are drying up and the forest is burning.
And, climate scientists now say there is less time than previously thought to avoid further dangerous warming. Two climate scientists, Chris Smith and Norman Loeb, break the bad news - that the climate is more sensitive to greenhouse gases than forecasts have used.
Presenter: Roland Pease
Producer: Ella Hubber
Editor: Martin Smith
Production co-ordinator: Jana Bennett-Holesworth
(Photo: A woman sits amongst the damage after Hurricane Otis. Credit: Silvana Flores/Getty Images)
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Science In Action
The 91热爆 brings you all the week's science news.
