It is argued that a necessary, but lacking, component of our approach in seeking policy responses to sustainability issues is some repeatable means whereby the relative magnitude and characteristics of these various policy problems faced in a given context can be analysed and described. To this end, a simple and tentative framework is constructed, based on the definition of the key attributes which shape policy problems pertaining to environmental change. These are: spatial scale of cause and effect; magnitude, timing and longevity of possible impacts; reversibility; mensurability; complexity and connectivity; nature of cause(s); relevance to the given polity; tractability (availability and acceptability of means); public concern; and existence of goals. These attributes inform a general taxonomy of micro-, meso- and macro-problems. The attributes and the taxonomy are described with supporting examples. To illustrate possible application of the framework, it is discussed briefly in the contexts of operationalising the precautionary principle , and policy instrument choice. It is concluded that the framework can help focus debate and operationalise vague principles, introduce relativity into the notion of sustainability, and make policy choice more efficient.