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When buildings are demolished the valuable materials they contain can also go to waste with materials crushed and then burnt at incineration plants. But one recycling plant in Finland is trying to recover more of the materials which could be reused. BBC Click’s Spencer Kelly finds out more. See more at Click’s website and @BBCClick

A new dating app called POM (Power of Music) is matching couples by analysing the music they listen to on their phones. More than 25,000 people have already downloaded the app, which launched this summer, and the start-up has gained £1.5m in investment. Produced, filmed and edited by Dougal Shaw

Western countries with higher rates of obesity are seeing more deaths from coronavirus than Asian countries with less obesity, the World Obesity Federation’s Dr Olivia Cavalcanti has said. She told BBC World News it was not clear why overweight people were more at risk, but could be due to an inflammatory response of the body….

Climate change activist Greta Thunberg said it was “very unclear” whether she had been officially invited to the climate change summit in Glasgow. In an interview with the BBC’s Andrew Marr, she also spoke about how some countries were sending many delegates to COP26, while others were “under-represented”.

When Yuri Gagarin became the first man in space 60 years ago, his chances of survival were only estimated to be less than 50:50, author Stephen Walker has told BBC World News. Mr Walker, whose book, Beyond, tells the story of Yuri Gagarin’s mission, says the cosmonaut was launched into space sitting at the top…

Augmented reality app, Museum Alive, is a continuation of Sir David Attenborough’s Bafta award-winning series of the same name. Featuring a Saber-toothed tiger (Smilodon), a flying reptile (Dimorphodon) and a sea creature (Opabinia), the app allows you close encounters with the animals and the opportunity to learn about the worlds they lived in. BBC Click’s…