A Distracted Scientist: The Life and Contributions of John Senders.

Objective: To provide an evaluative and personal overview of the life and contributions of Professor John Senders and to introduce this Special Issue dedicated to his memory.

Background: John Senders made many profound contributions to HF/E. These various topics are exemplified by the range of papers which compose the Special Issue.

Undercurrents on the Nile: the life of Dr John B Christopherson (1868-1955).

In the early 1900s, Dr J B Christopherson was one of a small number of British physicians who found their way to Khartoum, the capital of Sudan. The city had been laid waste by the battles of the legendary Mahdi and the armies of the British. Sudan was now considered part of an Anglo-Egyptian Condominium.