The turbulent flow of water creates undulations in the bed sediments - a series of ripples or dunes that slowly migrate in the direction of the water current.
My surgery went fantastically well, and a quick series of self-tests performed while still in my hospital bed confirmed my belief that cognitively, I was completely intact.
But even if the Rangers beat the Yankees in 10 successive playoff series, and the Red Sox retire from the sport to start a bed-and-breakfast in Hyannis, could a Texas rivalry ever get as highly pitched as New York's feud with Boston?