Uncharted: The returning soldier

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<p>Hannah Fry explores two tales of data and discovery.</p><p>In a few specific years across the 20th Century, the proportion of boys born, mysteriously spiked. We follow one researcher’s obsessive quest to find out why. </p><p>And next, a tale of science and skulduggery. Michael Mann was a respected climate scientist, unknown outside of a small academic circle, until he produced a graph that shocked the world and changed his life forever. </p><p>Producer: Ilan Goodman</p>