Conversation so far:
What is the reactions to Christopher Hitchens's death about?
Former British prime minister Tony Blair said, Christopher Hitchens was a complete one-off, an amazing mixture of writer, journalist, polemicist, a unique character.
Who was the one that said that Christopher Hitchens was a complete one-off?
Tony Blair
What was someone else's reaction to Christopher Hitchens's death besides Tony Blair?
American theoretical physicist and cosmologist Lawrence Krauss said, Christopher was a beacon of knowledge and light in a world that constantly threatens to extinguish both.
How did Christopher Hitchens pass away?
Hitchens died of hospital-acquired pneumonia
Are there any other interesting aspects about reactions to Christopher Hitchens's death besides Tony Blair's reaction, Lawrence Krauss's reaction, and how Hitchens died?
In 2015, an annual prize of $50,000 was established in his honour by The Dennis and Victoria Ross Foundation
Who does the annual prize money established in his honour go to?
an author whose work reflects a commitment to free expression and inquiry, a range and depth of intellect, and a willingness to pursue the truth without regard to consequence“
What is Christopher Hitchens most remembered for now that he has passed?
Christopher Eric Hitchens (13 April 1949 – 15 December 2011) was an English-American author, columnist, essayist, orator, journalist, and social critic.

Question: When did he pass away?
Self-contained rewrite: When did he pass away?