Environmentalists are increasingly teaming up with big business to help corporations produce environmentally sound products. Earlier this year, the Marine Stewardship Council sat down with Unilever, the corporate parent of Gorton and Birdseye frozen foods, and worked out a “sustainable fish” labeling system for grocery store packages of salmon, haddock, and other fish. European companies seem to be more open to working with enviros than companies in other parts of the world. Meanwhile, enviros have been coordinating with managers at a Dow Chemical complex in Midland, Mich., in a project to reduce toxic emissions while cutting costs, and both sides have been surprised by the great progress made.