Natural gas fell Tuesday as market watchers anticipated the end of winter, when demand for the heating fuel is expected to subside. Natural gas for April delivery settled down 4.6 cents, or 1%, at $4.605 a million British thermal units on the New York Mercantile Exchange. Prices soared above $6/mmBtu last month as frigid temperatures fueled unusually strong demand for gas-powered indoor heating. About half of U.S. households use natural gas as their primary heating fuel, according to the U.S. Energy Information Administration. Concerns about natural-gas supplies amid the unusually cold weather led to wild swings in the market, with prices moving 5% or more on 16 days in January and February. This month, on the other hand, has yet to see prices […]