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As temperatures rise, productivity falls.Extreme global temperatures are draining tens of billions of dollars in economic productivity every year from some of the world’s biggest cities. It’s not just outdoor jobs that are impacted, but office work too. In this episode, we ask work leaders, economists and employees what can be done to work around hot weather. From changing working hours to introducing heatwave insurance.(Picture: Labourer drinking from a water bottle, in the sunshine. Credit: Getty Images)Presented and produced by Megan Lawton

Cities and countries across the world are bringing in measures to restrict the type of lets popularised by companies like Airbnb and Vrbo.The regulations are to address concerns that homes in tourist areas are being used by visitors rather than being available for local people to rent on a long-term basis. We hear from Barcelona where its hoped thousands of flats will now be available for local people, and we're also in Halifax in Canada, where restrictions been in place for nearly a year. Produced and presented by Rick Kelsey(Image: A couple pressing a doorbell on a street in Spain. Credit: Getty Images)

Chocolate is very important to Switzerland’s economy: with more than 200,000 metric tonnes produced each year, sales are worth almost $2 billion. But there are challenges – not just over sustainability, but over exploitation. And the volatile price of cacao.We meet the researchers who are coming up with solutions – including new, and potentially healthier, types of a favourite indulgence.And ask: Is this enough to secure the future of chocolate?Produced and presented by Imogen Foulkes(Image: A scientist developing a new chocolate product)