How to make a diy faucet filter for your sink Learn how to create an effective water filter for your sink using simple materials. We used activated charcoal, fine sand, and gravel layers in a pvc pipe ...

The Corsi-Rosenthal box, invented by Richard Corsi and Jim Rosenthal, is an effective air purification system that can help remove droplets containing viruses in them from the air by sucking air into ...

A Korean research team has developed a new energy-harvesting water purification system capable of producing both purified ...