A timeline: How CNN got it wrong with the Boston Marathon bombing coverage

By Melanie Coulson

Melanie Coulson is the first Michener-Deacon Fellow for journalism education and Senior Editor at the Ottawa Citizen. This Storify was reprinted here with Coulson's permission. 

By Melanie Coulson

Melanie Coulson is the first Michener-Deacon Fellow for journalism education and Senior Editor at the Ottawa Citizen. This Storify was reprinted here with Coulson's permission.