In Oren Jacoby’s documentary “This Is Not A Drill,” three grassroots environmentalists team with descendants of John D.

Big Oil's trading profits are under scrutiny as wild oil price swings, largely driven by geopolitical events, present a challenging environment for capturing upsides.

Over the past decade, scores of Big Oil companies have set up separate trading divisions that frequently rake in billions in profits that help pad their bottom lines whenever oil and gas prices ...