Curitiba, Brazil: A sustainable city

Among Brazil's state capitals, Curitiba is considered a pioneer in sustainable urban planning. The vision for its approach goes back to the early 1970s - well before most of the world even considered sustainability. This week, CGTN correspondent Paulo Cabral begins a five-part series on this progressive city - now seen as a model for responsible growth. In Part One, he introduces us to the man behind its innovative journey.   #WorldToday #cgtnamerica