Catherine Rampell and Sudeep Reddy join Kai Ryssdal to recap the week in business and finance.

A number so big, it almost seems like it doesn't mean anything.

The cost is at a 4-month low. What's going on?

Once sanctions are lifted, Tehran will rush to exploit its oil and gas reserves.

OPEC predicts oil prices will hang below $100 a barrel for as long as a decade.

The people who oil companies pay to get the rights to drill for oil lose out.

Even if sanctions are finally lifted, Iran faces barriers to rejoining the world oil market

Falling oil prices slashed thousands of jobs in oil and gas extraction, including some on the Bakken oilfield in North Dakota.

An uptick in accidents suggests tougher rules for oil tankers will prevail.

When low prices and high supplies converge, you get a super-rare situation.