Health risks of Germany's return of Kogi masks to Colombia

Germany has returned two wooden masks of the indigenous Kogi community to Colombia, but they were treated with toxic pesticides during their time in German museums, which may pose health risks. The masks, which date back to the mid-15th century, were legally bought by a German ethnologist in 1915. The Prussian Cultural Heritage Foundation has concluded that the Kogi artefacts should never have been sold in the first place. The Kogi community will decide what will happen to the masks, and they may be used in rituals.