After centuries with little change, scientific libraries have recently experienced massive upheaval. From being almost entirely paper-based, most libraries are now almost completely digital. This information revolution has all happened in less than 20 years and has created many novel opportunities and threats for scientists, publishers and libraries. Today, we are struggling with an embarassing wealth of digital knowledge on the Web. Most scientists access this knowledge through some kind of digital library, however these places can be cold, impersonal, isolated, and inaccessible places. Many libraries are still clinging to obsolete models of identity, attribution, contribution, citation and publication. Based on a review published in PLoS Computational Biology, http://pubmed.gov/18974831 this talk will discuss the current chilly state of digital libraries for biologists, chemists and informaticians, including PubMed and Google Scholar. We highlight problems and solutions to the coupling and decoupling of publication data and metadata, with a tool called http://www.citeulike.org. This software tool exploits the Web to make digital libraries “warmer”: more personal, sociable, integrated, and accessible places. Finally issues that will help or hinder the continued warming of libraries in the future, particularly the accurate identity of authors and their publications, are briefly introduced. These are discussed in the context of the BBSRC funded REFINE project, at the National Centre for Text Mining (NaCTeM.ac.uk), which is linking biochemical pathway data with evidence for pathways from the PubMed database.