UN predicts worsening global drought, land degradation

At least 40 percent of the land in the world is degraded. This is according to the United Nations Environment Program, which says the problem has affected around 3.2 billion people globally due to desertification. As the international community marks World Environment Day today, the UN predicts that more than three-quarters of the global population will be affected by drought by 2050. Maureen Ojiambo reports.