Treatment and Purification

Up until two decades ago, the main sources of drinking water in Rajasthan included surface water from perennial ponds, reservoirs, lakes, dams, rivers and streams with borewells and tubewells used sparingly and only in remote areas. All this changed when guinea worm infections started appearing in the state. 

Water contamination due to dyes is a major cause of worry. A new study says sawdust from teak wood may help treat wastewater containing dyes and make it reusable. 

Degrading air quality in metro cities is a matter of concern for public health. Massive tree plantation drives are often conducted in order to provide oxygen to choking cities. But trees, much like humans, also are severely affected by pollutants in the air.

Srinagar's prime tourist attraction, Dal Lake, is no more the scenic beauty it used to be. It's turning into an eyesore, thanks to sewage discharge and weed growth.

Ahead of monsoon, workers made to clean stormwater drains filled with sewage in Hyderabad

Farhanuddin was just five years old when a pain in his knee began bothering him. It was 2013. Slowly, his legs began to change shape. They got so badly deformed that it began to affect his everyday life. He was gloomy and tired most times and had trouble walking.

Despite making sanitation a national priority with Swachh Bharat Mission, 50 percent of India defecated in the open till 2014. The goal to make India open defecation free by 2019 seemed ambitious. The government provided funding but it also sought active participation from the corporate sector.

India’s sanitation crisis involves huge cost. Transforming the country’s sanitation and waste management by 2019 is tall order.

Earthworms are considered best friends of farmers, acting as engineers in soils. They are helpful in the decomposition of waste, producing biofertilisers.

Nanotechnology deals with particles that are several thousand times smaller than the human hair, and it is being put to use in a variety of applications such as drug delivery and diagnostic tests.