The McGill Office for Science and Society (OSS) is a unique venture dedicated to the promotion of critical thinking and the presentation of scientific information to the public, educators and students in an accurate and responsible fashion. The OSS answers queries from the public and the media on scientific matters with a view towards separating fact from fiction. OSS staffers offer a variety of educational and entertaining presentations on scientific topics, appear often in the media, both on television and print, and have a large and influential presence on social media. They also oversee a number of courses designed to provide a scientific basis for the evaluation of controversial issues, as well as undertake the investigation of potentially fraudulent products and therapies. The OSS hosts the Trottier Public Science Symposium, one of McGill's largest annual symposiums, that focuses on topics of public interest featuring presentations by renowned experts.