Ravichandran Packiyam
Ravichandran Packiyam
Copper and silver vessels are age-old bacteria killers
Posted on 21 Apr, 2016 09:42 AMAbout 3 million children from developing countries below the age of 5 die every year due to diarrhoeal diseases caused by polluted water, poor san
![Household drinking water and coliforms (Source: Wikimedia Commons)](/sites/default/files/styles/featured_articles/public/iwp/water_1_8.jpg?itok=MZpxFjxA)