The Agency for Healthcare Research and Quality’s Centers for Education and Research on Therapeutics (CERTs) has launched a new educational web site offering clinicians and consumers expert information on drugs, biological products, and medical devices from a federally-sponsored network of leading research centers. The Clinician-Consumer Health Advisory Information Network (CHAIN) also provides access to informational resources developed from research conducted by CERTS and intended for use in improving health care quality, safety, and effectiveness.