ScienceOpen defecation it is notTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceMurali Krishnan06/23/2014June 23, 2014India's sanitation statistics stink. It is estimated that more than 50 percent of the population practice open defecation - that's 620 million people. So the Indian government says it will build 100,000 bio-digester toilets. This is how they work.https://p.dw.com/p/1COVEAdvertisement Report: Murali Krishnan, New Delhi