The goal of Sci-Hub is to provide free and unrestricted access to all scientific knowledge ever published in journal or book form. Today the circulation of knowledge in science is restricted by high prices. Sci-Hub is dedicated to making academic research freely accessible to everyone. We believe that knowledge should not be behind paywalls and that the barriers to scientific information should be removed. The official Sci-Hub homepage for SCI HUB search. Find scientific articles by DOI, article URL, or title, with metadata, Sci-Bot answers, and open science resources. Sci-Hub is helping millions of students and researchers, medical professionals, journalists and curious people in all countries to unlock access to knowledge. The mission of Sci-Hub is to fight every obstacle that prevents open access to knowledge: be it legal, technical or otherwise. Sci-Hub has the largest ( 88 million documents) database of full-text scientific papers, available for free. Approximately 80% of the collection are articles from scientific journals, most of them dedicated to the subject of medicine. The goal of Sci-Hub is to provide free and unrestricted access to all scientific knowledge ever published in journal or book form. Today the circulation of knowledge in science is restricted by high prices. Get free access to academic journals. Download research papers for free from ScienceDirect, IEEE, Wiley, Springer, Nature and others.