Two of my fellow Templeton-Cambridge Journalism Fellows were in the New York Times. One, Juliet Eilperin, had her book “Demon Fish” reviewed by the other, Sandy Blakeslee. It’s a clever review that gets at the heart of yet another human-driven problem: sharks are disappearing at our hands. A lot of the reason is shark-fin soup, though shark fins are tasteless. There’s also the fear factor, that sharks sometimes kill swimmers, even though it happens that Christmas tree ornaments are more dangerous than sharks.