What explains this apparent paradox of accelerating focus on taking steps to tackle climate change with limited forward progress in crafting trade policies that are responsive to climate-friendly objectives?  The Asian Trade Centre’s newest Policy Brief looks in detail at the difficulties of defining environmental goods.  [This Talking Trade post merely highlights some of the issues explored in the Brief—be sure to read the whole thing!] Policymakers in search of answers zeroed in on challenges in moving environmentally-friendly products across borders.  They were able to identify one specific issue: potentially high levels of tariffs applied to certain goods at the borders.  These tariffs were acting as a brake, impeding the flow of goods and driving up costs. Hence, one early and sensible idea was to consider how to reduce tariffs on environmentally friendly goods.  If tariffs are leading to lower utilization of climate-friendly products, the reduction or elimination of tariffs on these products should lead to their greater use. APEC members intended to have signatories agree to reduce tariffs on listed products to less than five percent within three years.  There would be “real world” consequences to inclusion/exclusion from APEC’s list of environmental goods (EGs).  Items on the list would have tariffs reduced or eliminated while those not included would not. Getting to the final set of 54 EG products, released in 2012, was not an easy process.  Understanding why it was so hard highlights the difficulties that are likely to affect a range of policy responses ahead.