Source: https://asia.nikkei.com/Business/Companies/Water-stressed-Singapore-bets-on-new-technology-to-secure-supply SINGAPORE -- André Stolz calls his company's feature product a "super-absorbent" sponge: a carbon-fiber filter made from recycled paper and cotton that can suck oil or industrial contaminants out of water. The company, EcoWorth, a start-up spun out of the Nanyang Technology University, three years ago, has so far raised around $1 million through grants, angel i