Repeated droughts experienced by Iraq for the past three years are accentuating the rural exodus underway throughout the country. No longer able to work on their land due to rapid desertification, farmers are moving to the cities. In oil-rich Basra, the country's economic powerhouse, these farmers end up in slums, often going without basic services.

The COP15 conference is meeting to address issues of land degradation, advancing deserts and deforestation. Experts and activists hope that this will not be just another high-level conference with no concrete results.

In the far north of Cameroon, Nigerian refugees have been fighting desertification for the past four years. The desert advances by 12 percent every year in the region, which gets on average three times less rainfall than the rest of the country. But the UNHCR is hoping that its programme at the Minawao camp can help turn back the tide. More than 360,000 seedlings have already been grown in the nursery and planted over more than 100 hectares. Our correspondents report.

Ghana is one of the tropical countries that has suffered the most from deforestation in recent years. The area covered by forests has shrunk five times in 100 years. While the government promises measures, young people are seeking collective action to reverse desertification.

Fighting desertification in Spain: The battle is on.

As desertification and soil erosion have led to the loss of arable land in Nigeria, could hydroponic farming be a sustainable alternative?