Natural-gas prices hit a more-than two-year low this week. Above, pedestrians on Thursday brace themselves against a cold wind in New York. European Pressphoto Agency Heaters from Minnesota to Maine are running full blast to ward off Arctic temperatures. But the natural-gas market is still ice cold. Prices for the fuel, used to heat half of U.S. homes, hit a more-than two-year low this week and are down 35% since mid-November. The arrival of freezing weather across most of the country hasn’t revived the market. Normally, plunging temperatures are a cue for traders to make bullish bets because the resulting spike in demand can deplete natural-gas supplies. Last February, prices jumped by more than 30% in a matter of days during one particularly severe cold snap. This time, natural gas isn’t getting its usual seasonal rally because many analysts believe supplies are high enough to get through even […]