Prices continued to climb at a brutally rapid pace in September, with a key inflation index increasing at the fastest pace in 40 years, bad news for the Federal Reserve as it struggles to wrestle the cost of living back under control. Overall inflation climbed 8.2 percent in the year through September, according to the latest Consumer Price Index report, a slight moderation from August but more than what economists had expected. Even more worrisome, underlying inflation trends headed in the wrong direction. After stripping out fuel and food — which are volatile and removed to get a better sense of the trajectory — prices climbed 6.6 percent in the year through September. That was the quickest rate since 1982. Inflation has been rapid for a year and a half now, and it is proving stubborn even as the Fed mounts its most aggressive campaign in generations to slow […]