Scientist Meng Lean has invented a spiral water filtration system which funnels water through lightweight disks, separating dirt and particles from clean water. The invention makes water recycling cheaper and faster and can be used for agricultural purposes.
(read the full story at Environmental News Network.com)
Very clever, a spiral filtration system makes water spin, separating dirt and particles from the clean water. Also much less land space is needed than for a water-treatment plant.