This three-part series in the Washington Post may do what decades of encouragement from Mrs. Geezer failed to do: persuade Geezer to spend more than $60 on his next pair of running shoes. The piece offers a new understanding of the influence of pronation on foot comfort and health, explains another meaning of the word "last," and tells us how to know when it’s time to retire a pair of running shoes (at the 500 mile mark). Helpful stuff. Read more in the Washington Post.