Interpol rescues child slaves in Benin and Nigeria

A decade on, the world has largely forgotten about the Chibok girls, who were kidnapped by Nigeria's Boko Haram Islamist militants. But for victims and their families, like Solomon Maina, who is still waiting for news about his daughter, the tragedy is ongoing.

Berlin's first drug-checking service launched last year and demand is high. Now the data is being shared with the KnowDrugs app, which informs users about the latest drug-checking results in Germany and beyond.

Over the past two years, the French and Spanish police have been discovering the extent to which rubbish is illegally smuggled across the border. The phenomenon has long plagued Italy, where the mafia organises the trafficking, and is now reaching France and Spain.