Ruby's Links: Why Walking Helps Us Think

What is it about walking, in particular, that makes it so amenable to thinking and writing? 

Ferris Jabr asks this question in The New Yorker Magazine article, Why Walking Helps Us Think, from September 2014. Read it online at https://www.newyorker.com/tech/annals-of-technology/walking-helps-us-think. A copy is also available in the OLLI office.