How ancient textiles can help the future

Fashion is the 2nd polluter in the world, and our clothing consumption has tripled in the last 20 years. Womenswear designer Angel Chang takes us through the ethnic minority villages of Guizhou Province in rural China, and shows how indigenous cultures and their traditional know-how can offer more sustainable ways of producing clothing today. She is taking what she's learned about indigenous crafts and applying that knowledge to make the fashion industry more sustainable.