This unit focuses on the substance of environmental responsibility - what matters. The question 'What should constitute our prime focus of attention?' can prompt different responses. We consider two points of contrast in differing focuses on what matters: 1 a distinction between nature and the environment 2 a distinction between nature/environment and related human interactions 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.