Conversation so far:
What is the New York Times?
The New York Times (sometimes abbreviated as the NYT and NYTimes) is an American newspaper based in New York City with worldwide influence and readership
What else can you tell me about the New York Times?
Founded in 1851, the paper has won 127 Pulitzer Prizes, more than any other newspaper

Question: Why did he only work for 15 years?
Self-contained rewrite: Why did Chris Hedges only work for the New York Times for 15 years?