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Fifty years after the first moon landing, we'll hear how images of the historic feat were beamed to millions around the world thanks to a radio telescope in the Australian countryside. We'll also mark the 75th anniversary of Operation Valkyrie — the failed plot by Count von Stauffenberg to assassinate Adolf Hitler.

As Hong Kong's pro-democracy movement gains momentum, we speak with Joseph Cheng of the pro-democracy coalition Alliance for True Democracy. Plus, we meet the Berlin renters fighting to save their communities from investors, discover an innovative approach to treating alcoholism in Canada and hear the sound of guitars made of wood salvaged from New York's torn-down buildings.

We investigate the disappearance of activist Sombath Somphone in Laos, discover the growing world of satire in India and find out how people in the "new" Russia are faring 30 years on from the Soviet Union. Plus, we visit a community garden for refugees in the US state of Georgia, examine the dire humanitarian situation in Yemen and explore the link between art and science in Venice.

This week on the show, we hear from a big name in Russian rap about Russia's clampdown on the music scene, Indian artist Raghava KK on how artificial intelligence can create transcendent art, and a pioneering African American doctor from the Bronx who's still practicing medicine in her nineties.

On this week's show, we'll be meeting the Uighur families who've left China for a safer life in Turkey. Plus: the British-Somali woman changing perceptions about food and identity.