As indigenous languages die out, will we lose knowledge about plants? – podcast

There are more than 7,000 languages spoken on Earth, but by the end of the century, 30% of these could be lost. This week, research warns that knowledge of medicinal plants is at risk of disappearing as human languages become extinct. Phoebe Weston speaks to Rodrigo Camara Leret about the study, and the links between biological and cultural diversity