Oil futures ended mostly lower Monday, weighed down by a global supply glut. West Texas Intermediate crude for February delivery , the most active contract, fell 25 cents, or 0.7%, to finish at $35.81 a barrel. Front-month January crude ended its last trading day up 1 cent at $34.74 a barrel. On a most-active basis, Nymex crude is down more than 14% in December and has dropped 33% since the end of 2014. Natural gas futures, meanwhile, jumped higher after notching nearly 16 year lows last week. January natural-gas futures rose 14.4 cents, or more than 8%, to end at $1.911 per million British thermal units, lifted by cooler weather forecasts.
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