Around half of the clinical trials done on medicines we use today are not
published. A tragic truth that needs to be changed, to help doctors do their
job properly and to not betray the trust of all those who have volunteered
to be part of those trials. Audiovisual producer: Daniel Goldmann. Editing: Xavi Fortino. Film team: Elena Salcedo, Josep Tejón, Daniel Davidson, Nicolás Mazzini, Nacho Valentín, David Ramos, Ignacio Fuentes and Fran Rubio.

Síle Lane is director of campaigns and policy at Sense about Science, a charity concerned with the use and abuse of scientific evidence in public life. Síle helps run the global AllTrials campaign for clinical trial transparency which is supported by thousands of people and organisations worldwide. Find out more at www.alltrials.net

This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx