A solar-powered electrokinetic filter removes nanoplastics and bacteria using electric fields instead of pressure, offering efficient, low-energy water purification with simple, scalable materials.

Slices of wood can act as water filters that remove bacteria and microplastics with more than 99 per cent efficiency, potentially offering a cheap way to protect people from water-borne illnesses.

Water filter straws were a breakthrough when LifeStraw released its first commercial model in 2005, enabling people to take a sip from a stream without fear of also consuming bacteria or parasites ...