The Great Green Wall of Africa: Will it help fight climate change? BBC Newsnight

Climate change poses huge challenges and some projections say it will cause hundreds of millions to become refugees. Desertification in sub-Saharan Africa plays a big part of that, and that in turn feeds into Europe's unfolding migrant crisis. Inna Modja is a Malian singer and activist who has been to Senegal for Newsnight to witness a pan-African initiative, the Great Green Wall. It aims to improve livelihoods in the Sahel region, reverse desertification, and break the cycle of exodus.

Newsnight is the BBC's flagship news and current affairs TV programme - with analysis, debate, exclusives, and robust interviews.

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