In early February, I traveled to Diffa in southeastern Niger to better understand the impact of Boko Haram on the people living there. The Diffa region alone currently hosts over 240,000 internally displaced persons, refugees and returnees, including 160,000 children.

The South African government is planning to implement a sugar tax to help curb the country's growing obesity epidemic.

At first glance, Sudan looks like any other northern white rhino: stout and agile, with square lips.