2013 Grand National to modifications made for the previous year's race, Aintree announced that a number of further changes had been made for the 2013 National. Twelve of the 16 fences on the course were rebuilt with the timber frames within them replaced by a softer material known as "plastic birch". The fences are still covered with at least 14 inches of spruce and will remain the same height. The starting line was also moved 90 yards closer to the first fence, further away from the spectators' stands and thereby reducing slightly the overall distance. Aintree and the Professional Jockeys' Association jointly issued
The Times They Are a-Changin' (album) he was out of high school: "I was eighteen or so when I discovered Ginsberg, Gary Snyder, Philip Whalen, Frank O'Hara and those guys. Then I went back and started reading the French guys, Rimbaud and François Villon." Many critics took note of the stark pessimism on "The Times They Are a-Changin'," which NPR's Tim Riley later described as "'Masters of War' stretched out into a concept album" due to its "social preening and black-and-white moralism". By the time the album was released on January 13, 1964, Dylan was already entering a new phase in his career, pulling further away