Yes, microplastics are pervasive (“Welcome to the Plastocene,” HCN, 11/26/18). Here is a quote from the Patagonia ad in the same issue: “The newest addition to the Patagonia Workwear line, our Steel Forge Denim blends 92% organic cotton with 8% Dyneema®, a fiber that’s light enough to float on water but 15 times stronger than […]