When a NATO fighter jet was sent to investigate what appeared to be a suspicious drone near Vilnius airport, the culprit turned out to be something rather less threatening: a flock of birds. Inspired by this case of mistaken identity, the Unexpected Elements team explores the science of getting things wrong. We discover why our brains are so eager to spot faces in everyday objects, from clouds to power sockets, and hear how this tendency may have evolved as a shortcut for detecting friends and foes. We also investigate the widespread issue of mislabelled cell lines that have found their way into thousands of scientific studies, raising questions about research reliability and reproducibility. Then we meet Alex Donovan from the MRC Laboratory of Molecular Biology at Cambridge University, who tells us the story of brain organoids, or "mini-brains", a field of research born from an apparent laboratory mistake that has gone on to transform neuroscience. Elsewhere, we hear how a WhatsApp message helped identify a devastating banana disease outbreak in Tanzania, ask whether anybody else in the world has exactly the same face as you, and explore how the venom of the Gila monster ended up inspiring drugs now used by millions of people around the world. All that plus more unexpected elements.Presenter: Marnie Chesterton
Producer: Ella Hubber with Alice Lipscombe-Southwell and Robbie Wojciechowski

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