The physical and chemical differences between these crude types determine how easy they are to refine and their market value.

While lighter fluid is often a staple at backyard barbecues, many grill masters -- both professional and amateur -- insist that relying on lighter fluid to start a grill imparts an unpleasant taste to ...

HOUSTON, Oct 22 (Reuters) - Companies drilling for the crude that turned the U.S. into the world's top oil producer face an unexpected dilemma: their West Texas Midland crude is getting lighter, which ...