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Stories of the struggles and the strength of farmers and herders across the world. Robin Lustig visits an illicit coca plantation in Peru, but has an exhausting hike to get there; Chris Terrill explains why drought drives young men in the Sahel into the arms of militant groups; Sybil Ruscoe witnesses how American ranchers on the Great Plains are rallying to help each other after a devastating storm; Nick Thorpe traces a dispute over hydropower upstream to its source in the Austrian Alps; Tessa Dunlop sees Russia and the EU vying for influence in a rural Moldovan marketplace - and Horatio Clare learns just how much it costs per year to own and operate a working elephant, at the Sonepur livestock fair in Bihar, northeastern India.

Presenter: Pascale Harter. Producer: Polly Hope. Photo: A Palestinian farmer works at his cabbage field in the Gaza Strip (MOHAMMED ABED/AFP/Getty Images)