Conversation so far:
What happened in 1903 to Ernest Shackleton
After a period of convalescence in New Zealand, Shackleton returned to England via San Francisco and New York.
Why was Ernest Shackleton applying for employment after returning to England
He was in search of more permanent employment
Why was Ernest Shackleton's job as a jornalist unsatisfactory

Question: What else did he do in his career
Self-contained rewrite: What else did Ernest Shackleton do in his career besides becoming a jornalist?