Questions older than a year that you can mark for deletion by simply downvoting them. The rules are detailed here: http://meta.stackoverflow.com/a/92006.
The view count rules are relaxed to 2x the question age because those might fail to keep up a steady stream of views at some point in the future.
Q&A for people interested in the history and origins of science and mathematics
DECLARE @DataDumpAge as datetime
SELECT @DataDumpAge = MAX(CreationDate)
WHERE (Score = 1 OR (Score = 2 AND OwnerUserId IS NULL))
AND (AnswerCount = 0 OR AnswerCount IS NULL)
AND CommentCount <= 1
AND DATEDIFF(day, @DataDumpAge, CreationDate) > 365
AND ViewCount <= (DATEDIFF(day, @DataDumpAge, CreationDate) * 1.5)