Natural-gas futures rose slightly Tuesday as some traders bet that the recent rally could run out of steam, while others were reluctant to sell with expectations of a prolonged cold weather and increased demand for the heating fuel. Natural gas for January delivery settled 0.5 cent higher, or 0.1%, to $4.237 a million British thermal units on the New York Mercantile Exchange. Prices had risen as much as 1.2%, climbing to a new six-month intraday high earlier in the session, but later gave back most of those gains. “It’s hard to buy find new, fresh, willing buyers at these lofty heights and a lot of people are saying ‘where do we go from […]