U.S. oil prices edge up as Texas braces for storm

LONDON (Reuters) - U.S. crude oil prices edged up on Tuesday as a tropical storm headed towards the oil-producing state of Texas, but oversupply kept Brent lower.

Isaac threatens Gulf oil production

NEW YORK (CNNMoney) -- Tropical Storm Isaac is curtailing oil production along the Gulf of Mexico and threatening refineries, which could send already rising gasoline prices up another 10 cents in the coming week.