Photojournal: Chad urban migrant's story

Chad’s capital, N’Djamena, is growing fast. In 1950 its population was 37,000 – by 2015 it may approach 2m. Drought and poverty are pushing many rural dwellers to seek a better life in the city.

As part of our Urban Planet series, we spoke to migrant worker Omar Imma Assayar.

After years of worsening drought in his village of Tchoffal, Omar, a 45-year-old vegetable grower, moved to the city with his wife and 10 young children.

All live, sleep and work in one room.