[Shanghai startup creates more sustainable natural fiber from kapok trees] In Shanghai, a startup is claiming that its fiber made from the Kapok tree is the most sustainable textile on the market. Kapok trees, which can be found widely in South America, West Africa, and Southeast Asia, produce large numbers of seeds that come protected by a fluffy fiber that has been used widely in stuffed toys and bedding . The downside to Kapok, however, has been the need to also use water-intensive cotton fibers to make up for Kapok fibers’ lack of density. Enter Flocus, which says it has…