Washington Post visualization: “Which food is better for the planet?  Salmon or cod? Knowing what to eat to minimize impact on the planet can feel like an impossible task: Eat locally? Skip meat? Opt for organic, free range, humanely raised? But each of those choices, however Earth-friendly they may sound, come with environmental impact. And they can reverberate in unexpected ways, according to a recent study out of the National Center for Ecological Analysis and Synthesis, affecting not just the climate but water and wildlife habitats around the globe. Consider the environmental footprints of some common dietary staples, including meat, fish, dairy and eggs and crops…”