Environmentalists and other big oil explorers are watching.

Hint: It has to do with fracking.

Market forces are making recycling less profitable.

With the largest U.S. refinery strike in decades, how are prices being affected?

The Baker Hughes Rig Count gets much attention. Does it still reflect oil production?

In response to low oil prices, oil companies may cut back exploration projects.

Billionaire oil producer Harold Hamm predicted a "pretty quick" recovery for prices.

Too much oil means prices fall, but also oil companies cutting back.

For states trying to balance budgets that rely on oil taxes, it's crunch time.