Great green wall: Villagers' defence against desertification

Al Jazeera meets Senegalese in a race against effects of climate change.

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    Climate change is causing the Sahel Desert to grow, but villagers are planting a vast wall of trees in a bid to save their land.

    Three years ago, Al Jazeera visited the so-called "Great Green Wall".

    Al Jazeera's Nicolas Haque returned to Mbar Toubab in Senegal to see whether it is working.


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