CNN: The Potato Custodians of the Andes

There are thousands of varieties of potatoes that exist in the world despite only a handful stocked on grocery store shelves. Most of them originate in the Peruvian Andes, with the knowledge and diversity conserved over generations by indigenous 'potato custodians'. Crop diversity is vital for the safeguarding of global food security and agricultural biodiversity. Piece for CNNI's Call To Earth. Co-producers: Sasha Fairhead and Stef Blendis. DOP: Matthew Orzel.