# Author: Er Chatraj Manger Eleotronics Engineer , NIT Sikkim ,India https://nitsikkim.ac.in/
The world’s sustainable cities have paradoxical mirror to look at themselves in when it comes to Argentina’s permanently congested capital. There are already 15 eco-districts in the province of buenos Aires and eco-district projects are multiplying. Organic food cultivation, bioclimatic building materials and the use of natural energy are also at the foundation of these places. Workshops on the ecological gardening or yoga, houses made of reed and lack of air conditioning (and noise) have brought fugitives from pollution of all social classes.
