Which has the lowest carbon footprint — farmed Atlantic salmon, chicken, pork or beef?

The Global Salmon Initiative (GSI) released its Sustainability Report earlier this month and the answer may actually surprise those in the aquaculture industry — it’s chicken, but by the slimmest of margins.

The carbon footprint, which measures total direct and indirect greenhouse gas emissions in kilograms of carbon dioxide equivalent per kilogram of edible part of the product, is 2.9 for the salmon vs 2.7 for chicken. Pork has a carbon footprint of 5.9