diverse and innovative cuisine - but how is it making sure its venerable food heritage is preserved for decades to come? We meet the indigenous Quechua people who are cultivating more than 1300 species of potato, working with scientists to safeguard seeds in community banks as part of both ecological and cultural efforts. And we hear how communities in the high Andes are turning back to crops like quinoa and kiwacha in the face of climate pressures and the desire to boost nutrition.

People Fixing The World from the BBC is about brilliant solutions to the world's problems. We release a new edition every Tuesday. We'd love you to let us know what you think and to hear about your own solutions. You can contact us on WhatsApp by messaging +44 8000 321721 or email peoplefixingtheworld@bbc.co.uk. And please leave us a review on your chosen podcast provider.

Presenter: Myra Anubi Reporter: Jane Chambers Editor: Jon Bithrey Sound mix: Annie Gardiner

(Image: Peruvian farmer Victoria Quispe on her farm, Jesus Infantes, SIMPLi)

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Learning to read empowers people, reduces poverty and increases their job chances. Yet more than 700 miliion adults are illiterate, the majority of them women. We look at innovations to help adults learn how to read from flatpack classrooms in flood-prone regions of Bangladesh, to an app teaching tens of thousands in Somaliland. Plus how adults in the UK are improving their reading skills thanks to an army of volunteer teachers using a method developed in prison.

Presenter: Myra Anubi Reporter/producer: Claire Bates Series producer: Jon Bithrey Editor: Tom Bigwood Sound mix: Andrew Mills

Test-tube rhinos