Jack London was born in San Francisco in 1876. He had a difficult childhood and worked various labor jobs as a teenager. He was interested in socialism and traveled extensively, including sailing in the Pacific and going to the Klondike Gold Rush in Alaska in 1897. London wrote over 50 books in his lifetime, including novels, short stories, and essays. Some of his most famous works that explored themes of survival in the wilderness were The Call of the Wild, White Fang, and To Build a Fire. He died in 1916 at the age of 40.