It is accurate, the way time ticks away, to say that it was an eternity ago when Norway’s Petter Northug jr. splashed onto the Word Cup scene to the delight of fans and the paparazzi. According to the International Ski Federation (FIS) data base, Northug stepped to the top of the podium in only his eighth World Cup start. In the 2005/06 season, he placed first in Falun, Sweden’s 2 x 10-kilometer pursuit. There...