NFL teams are turning turnovers directly into points at a record rate. So far this season, 13.1 percent of interceptions and fumbles — more than one out of every eight — have been returned for touchdowns, the highest clip since the AFL-NFL merger in 1970, according to STATS. That represents another spike in what has been a steadily upward trend over the last five seasons: 8.4 percent in 2009, 8.8 in 2010, 9.5 in 2011, 11.5 in 2012. In addition to more than two dozen fumbles brought back for TDs, there have been 48 pick-6s through Week 12, the second-most behind only the 50 to this point in 2012.