kkleiner writes: Researchers at Stellenbosch University’s Water Institute have developed a new water filtration system that uses activated carbon and nanofibers to quickly filter out pathogens. The carbon and nanofibers are placed in common tea bags and then fitted into a bottle. Fill the bottle with dubious water, install a filter, and drink. It’s that easy. The ultimate price for these ‘tea bag’ nanfiber filters could be around half a cent (USD) each and be able to handle around 1 L before being replaced.