Despite these concerns, the depletion of non-renewable resources, such as fossil fuels and uranium, should not be a major issue of consideration in policy making. As commodities with high private and little additional social value, oil, coal, gas and uranium are traded on large and liquid international markets, where information about long-term scarcity is widely known and would be priced in immediately if it ever became a genuine cause for concern. From a policy-making point of view, the best response to resource depletion concerns is to ensure that existing markets remain as open and competitive as possible and that information about resource availability is shared widely.