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How far can human efforts contribute to the greening of the Sahara?
The scientists collecting evidence of climate change in the Namib desert
Is the Sahara greening or drying up? A look at the evidence
A look at the problems and benefits for farmers working overseas
What can farmers from different countries learn from each other?
2/2 programmes looking back at the pro-democracy protests in China's Tiananamen Square
A look back at one of the 'biggest popular revolts in the history of communism'
A look at the effects of the global recession in Japan
How will Europe and US financial bail-out packages hit newly emerging nations?
3/3 programmes uncovering the scholars of the 'Golden Age' of Islam
