After decades of exploitation, time is running out for the Amazon rainforest. Eight South American nations came together this week for the first time in 14 years in an attempt to draw up a plan for a more sustainable future.  

The BBC’s South America correspondent Katy Watson sends us an update on the summit from Belém, Brazil.  

We also hear from Brazilian scientist Joice Ferreira who tells us why the Amazon is so important for the entire planet.  

Next up Victoria Gill finds out more about how British Sign Language is adding key scientific concepts to its dictionary in order to open up science communication to a broader community of people. There are still many words and phrases that have not yet been ‘signed’. 

Now did you know that the inhalers used by asthmatics emit a tiny amount of greenhouse gas with every puff? Victoria speaks to Dr Veena Aggarwal, a GP registrar and former member of Greener NHS, about whether the government’s new plan for environmentally friendly inhalers will help.  

Finally Victoria catches up with palaeoanthropologist Lee Berger. He’s written a book that tells a harrowing tale about his trip into a labyrinth of underground tunnels to find out more about an ancient human-like creature called Homo naledi. 

Presenter: Victoria Gill 
Producers: Hannah Robins and Harrison Lewis 
Content producer: Alice Lipscombe-Southwell 
Research: Patrick Hughes 
Editor: Richard Collings

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