Warfare has given rise to an invisible killer, one that was first discovered in World War I, attacking soldiers even after they had returned home to their families. Historian of science Emily Mayhew takes us through the story so far. |Read along while listening at our Medium: bit.ly/22baD1N |Narrated by Vidish Athavale | Music by Kai Engel |Emily is a historian in residence at Imperial College London, working primarily with the Centre for Blast Injury Studies. A military medical historian, she specialises in severe casualty in 20th- and 21st-century warfare. Her book Wounded​ was shortlisted for the 2014 Wellcome Book Prize.