LAHTI, Finland — While Monday marked a rest day for skiers competing in the 2017 Nordic World Championships, FasterSkier took the opportunity to sit down and chat with Sadie Bjornsen of the U.S. Ski Team, one day after she earned bronze with teammate Jessie Diggins in the women’s 1.3-kilometer classic team sprint. Not only was it Bjornsen’s first-career World Championships medal, it was the first for the U.S. women’s program in a World Championships classic race....