The seed guardians of Peru trying to save the potato

From potatoes to quinoa, many of our favourite foods are at risk from threats like climate change and disease. The "seed guardians" of Potato Park in the Andes are hoping to change that. The potatoes that grow in the Andes of South America are far more than a starchy staple of the local diet. They are a rich part of the culture. But now these beguiling vegetables have a new and vital role to play – helping to ensure potato crops can adapt to the challenges of climate change.