Farmer's son invents zero-electricity water purifier, gets it patented
India is reeling under a severe water crisis in its history with the country ranking at 120 out of 122 countries in the quality of water.
Jul 11, 2019, 19:48 PM IST
India is reeling under a severe water crisis in its history with the country ranking at 120 out of 122 countries in the quality of water.
Jul 11, 2019, 19:48 PM IST