U.S. oil prices fell to a six-week low Thursday as swelling crude inventories weighed on the market. Light, sweet oil for April delivery slid $1.12, or 2.3%, to $47.05 a barrel on the New York Mercantile Exchange, the lowest settlement since Jan. 29. The U.S. oil benchmark is down 56% from its mid-June high. Growing global oil output and lackluster demand sent prices plunging in late 2014. U.S. crude stockpiles are at their highest in about 80 years, and production continues to grow, according to the U.S. Energy Information Administration. Data service Genscape Inc., which tracks storage levels in Cushing, Okla., reported to its clients Thursday that inventories in Cushing rose by 2.2 million barrels between March 6 and March 10, according to two market participants. Prices turned lower on the news. Cushing is the delivery point for the benchmark U.S. oil-futures contract, so prices are sensitive to supply […]