This unit explores conceptual tools for assisting our thinking and deliberation on what matters. The notion of ‘framing’ nature is introduced and three readings provide an understanding of systems thinking for explicitly framing issues of environmental responsibility. This study unit is just one of many that can be found on LearningSpace, part of OpenLearn, a collection of open educational resources from The Open University. Published in ePub 2.0.1 format, some feature such as audio, video and linked PDF are not supported by all ePub readers.