Nature: “An ambitious free index of more than 200 million scientific documents that catalogues publication sources, author information and research topics, has been launched. The index, called OpenAlex after the ancient Library of Alexandria in Egypt, also aims to chart connections between these data points to create a comprehensive, interlinked database of the global research system, say its founders. The database, which launched on 3 January, is a replacement for Microsoft Academic Graph (MAG), a free alternative to subscription-based platforms such as Scopus, Dimensions and Web of Science that was discontinued at the end of 2021. “It’s just pulling lots of databases together in a clever way,” says Euan Adie, founder of Overton, a London-based firm that tracks the research cited in policy documents. Overton had been getting its data from various sources, including MAG, ORCID, Crossref and directly from publishers, but has now switched to using only OpenAlex, in the hope of making the process easier…”