The filter uses treated crop husk to remove most harmful particles and costs a fraction of commercial units.
A team of researchers has developed a low-cost water filter made from treated crop husk.
Laboratory tests showed it removes most suspended particles and a large share of common contaminants.
The team is now working with village councils to test the filters in homes and schools.
Two showers will peak on the same nights — dark skies away from city lights will offer the best view.
The next phase of the urban programme shifts attention from large metros to smaller towns, with water supply, electric buses and…
Reservoir levels are healthy in most regions, giving farmers confidence ahead of winter sowing.
Twelve countries agreed on common targets, joint clean-up drives and a shared system to track waste at sea.
