Polio is back and, with it, fears over the outbreak of the childhood killer spreading in New York and London. In a world still reeling from the Covid-19 pandemic, news that a 20th-century scourge -- one we’d thought we’d vanquished -- is resurgent is a grim reminder of the age we live in. Thom is joined by Middle East correspondent, Patrick Cockburn. Plus Geeky Science: Can Hugs heal your heart?

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