Climate change is a key issue on today’s social and political agenda. This unit explores the basic science that underpins climate change and global warming. 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.