| 05 August 2010

Image via James Dyson Award Most portable water filters use carbon filters, special membranes with microscopic openings, or chemicals like chlorine or iodine to clean the water and make it save for drinking. However, one of the best systems for purifying water is actually with ultraviolet light. But how do you get an ultraviolet light purification system into a small portable water bottle that can be used anywhere? One design and technology graduate has figured it out, and already won the UK branch of the prestigious James Dyson Award for... Read the full story on TreeHugger