Elsevier is the world’s leading publisher of science and health information. We help our customers advance science and health by providing world-class information and innovative tools that help them make critical decisions, enhance productivity and improve outcomes. Elsevier's roots are in journal and book publishing, where we have fostered the peer-review process for more than 125 years. Today we are driving innovation by delivering authoritative content with cutting-edge technology, allowing our customers to find the answers they need quickly. We publish around 2,000 journals and close to 20,000 books and major reference works.