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Many states are running out of money to maintain highways.
With gas prices down, we're tilting toward bigger cars but still driving less.
Billionaire oil producer Harold Hamm predicted a "pretty quick" recovery for prices.
If oil prices fall, will tires cost less? The answers are far from black and white.
Kai Ryssdal talks to commercial grain farmer Curt Mowery.
The worst-hit countries are small oil producers that depend greatly on the revenue.
Too much oil means prices fall, but also oil companies cutting back.
What’s a country to do as its currency collapses? Russia basically needs to weather the storm.
With oil prices falling, the group will have to give up market share or profits.
Whole states lose out, and, also, global warming.
