The document discusses the shift towards open access publishing. It provides background on open access, describing it as content that is freely available online without financial, legal or technical barriers. The document outlines the history of open access, from early online journals in the 1990s to major developments like arXiv, PubMed Central, and the launch of open access publishers like BioMed Central and PLOS. It describes the open access business model of article processing charges and discusses new models from organizations like eLife, PeerJ, and Ubiquity Press. Finally, it addresses the current climate driving the shift towards open access, including funder policies in the UK, US and EU supporting greater public access to taxpayer-funded research.