The Aurora Borealis – also known as the Northern Lights – won’t be at their peak activity much longer, and the Unexpected Elements team dreams of going north to see them. And that has got us looking at the science of navigating our way north! We hear about how humans have been using the sky to navigate for millennia, and we learn about how relying on GPS may be impacting our memory ability. And while humans use maps to get around, how do animals know where to go on their long migrations? To find the answer, we speak to Dr Kayla Goforth at Texas A&M University who studies exactly how sea turtles and monarch butterflies innately know how to navigate the world around them. We also learn why polar bears keep themselves ice-free, and we hear old records of the first men to reach the North Pole. All that, plus many more Unexpected Elements. Presenter: Caroline Steel, with Andrada Fiscutean and Phillys Mwatee 
Producer: Imaan Moin, with Alice Lipscombe-Southwell, Noa Dowling and William Hornbrook

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