The Committee on Market Access held on 11 June a first exploratory session on “greening” the Harmonized System (HS), the system used to classify traded goods, and how this relates to the work of the WTO. The session featured presentations from the WTO Secretariat, World Customs Organization (WCO), Food and Agriculture Organization (FAO) of the United Nations, Basel, Rotterdam and Stockholm Conventions (BRS) Secretariat, and the Government of Ecuador on how the HS could be adapted to help WTO members achieve their environmental objectives.