Nature and EnvironmentSaving Tamil Nadu’s green building secretsTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and Environment12/16/2021December 16, 2021Unprecedented growth has fueled construction booms in many cities. But cement has a huge carbon footprint. In search of green alternatives, two engineers in Tamil Nadu are rescuing ancient know-how from obscurity.https://p.dw.com/p/44NGdAdvertisement