Title: On the Origin of Species.
Question: Why might Darwin have postponed publishing his theory of evolution for over 20 years?

Title: Gramophone record.
Question: What benefits to vinyl have been found in the 1950s?

Title: Ashkenazi Jews.
Question: What was the conflict between Sephardic and Ashkenazi Jews attributed to?

Title: The Times.
Question:
What is the name of the The Times founder's grandson who succeeded his father as editor?