In Mauritania, northwestern Africa, slavery is a fact of modern life. It's estimated that 10-20 percent of the country's 3.5 million people are still enslaved in a system rooted in ethnic discrimination.
Nowruz is one of the oldest celebrations in the world. It has been a fixture on the cultural calendar in many regions for more than 2,500 years. It marks the beginning of spring and also the change of seasons in the Iranian solar calendar. Sharam Ahad offers his impressions of the celebrations.