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Around the world, individuals swim against the tide to try and improve their lives, in dispatches from correspondents and writers, introduced by Pascale Harter. In this edition:

Quentin Sommerville meets survivors - and losers - trying to crest the wave of Libya's migrant crisis, which has turned the Mediterranean into the world's most lethal migration route;

Chris Haslam joins a work party to find out how Ethiopia's Tigray region is fighting drought and desertification with terracing;

Anu Anand struggles for breath in New Delhi and reflects on poor air quality in India;

and Ian Pannell joins the long lines of people outside Venezuelan shops, looking for subsidised goods and good deals.

Photo: a group of men from the village of Abr'ha Weatsbaha, Tigray region, Ethiopia, take up their tools for a day's collective labour shoring up terracing nearby. The work helps to keep the land fertile and reduce drought. (C) Chris Haslam