Prof Winston on the logic, engineering and physics underlying the musical sounds we hear. 
Cold Turkey in Karachi
Mobeen Azhar finds out how a charity is helping heroin addicts in Karachi.
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Forced sterilisation in Uzbekistan
Natalia Antelava uncovers evidence of the involuntary sterilisation of women in Uzbekistan
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Farming Zimbabwe
Martin Plaut investigates Zimbabwe's agriculture ten years after the farm invasions.
Clips
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"It looks like the leg bone of somebody..." Duration: 02:03 Mexico's Village Vigilantes
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Outcry over Japan's forced confessions Duration: 02:50 Forced Confessions in Japan
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What can the Kurds tell us about life after dictatorship? Duration: 02:31 What happened to the Kurdish spring?
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Inside the Mourides' grand mosque Duration: 01:36 The Mourides of Senegal
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The Mourides' global business hub Duration: 01:54 The Mourides of Senegal
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Senegalese wrestlers Duration: 01:25 Senegal
The Best of Crossing Continents
Explore the highlights from the Crossing Continents archive
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Crossing Continents
On the ground reporting from around the world which focuses on the human dimension of the big...
