I worked for 13 years as a journalist at Agence France-Presse, with lengthy postings in Washington, Harare, Bangkok and Johannesburg. I've worked in about two dozen countries on four continents, covering everything from elections to coups, wars and peace talks, the World Cup and Mandela's funeral. My main focus is on South Africa and Zimbabwe, and to some degree the rest of the continent. Although most of my work has been in print, I'm also comfortable in front of the camera.
My not-so-close encounter with George Clooney, and how failing to meet him shines a light on one of the most successful interactions between celebrity and charity.
A collection of Nelson Mandela's papers reveals his years of heartache at missing his family while in prison and his wariness at becoming idolised.
Johnson is available 9:00-17:00 GMT Mon‑Fri, or by email 24/7