Examples include cold-pressed oils, such as flaxseed, evening primrose, and walnut oil. These oils are susceptible to light ...

Natural gas and heating oil prices in the US are rising sharply due to a predicted polar vortex that could bring ...

Oil futures rose sharply Friday, trading at their highest since October with support tied to cold weather in the ... $3.901 per million British thermal units, up 5.4% in Friday dealings ...