Who can you trust? If the answer to that question is ‘I don’t really know’ the solution is to go back to the source. Third-party sources are good for an overview, but for the facts you need to find the primary data. In this talk, Juliet Ferguson from the Centre for Investigative Journalism explains how journalists fact-check and verify stories using primary source material. But should all sources be treated equally? In a world of mis- and dis-information asking who has most to gain from – and who is willing to pay for – misleading information can be a useful way to evaluate data.

Juliet is the Investigative Journalist and Programme Manager at the Centre for Investigative Journalism, London