Shared speaking history
Johann Hari & Margaret Heffernan
Both spoke at 1 of the same event
JH
Johann Hari
Social commentator on mental health & addiction | Author of 'Lost Connections' and 'Chasing the Scream'
MH
Margaret Heffernan
Thinkers50 Hall of Fame | Management Thought Leader
Events they've both spoken at
TEDSummit
Jul 2019