David Kestenbaum

Over the past decade, some 39,000 people have come forward voluntarily to tell the IRS about offshore money they haven't been paying taxes on. This group provides a small window into the world of people who are hiding money in offshore havens. (It's a world we've been trying to learn more about, partly by setting up an offshore company in Belize.)

I spoke yesterday with Dan Sichel, a Wellesley economist and a Lady Gaga fan. Both of these facts are relevant for this story.

The U.S. government is about to tweak the way it measures the economy, and some of the biggest changes will affect the entertainment industry.

Under the current system, Sichel told me, Lady Gaga's sales of concert tickets, online songs and CDs all count toward gross domestic product. But the value of the time she spends in the studio working on new songs isn't counted. That's about to change.

Last year, a new drug called Zaltrap was approved as a kind of last-chance therapy for patients with colorectal cancer. Studies suggested Zaltrap worked almost exactly as well as an existing drug called Avastin. In fact, the main difference between the two drugs seemed to be the price.

"I was rather stunned," Dr. Leonard Saltz, who specializes in colorectal cancer, told me.

Zaltrap costs about $11,000 per month — about twice as much as Avastin, Saltz said.

With immigration policy in the news again, I asked three economists, "Dream big: If you could create any immigration policy for the U.S., what would it be?" Here's what they said.

1. The Best And The Brightest

Dean Baker of the Center for Economic and Policy Research would give out more visas to highly skilled workers: scientists, engineers, computer programmers and doctors.

Ecuador's Yasuni National Park is one of the most diverse ecosystems on Earth. But there's a complication: The park sits on top of the equivalent of millions of barrels of oil.

This creates a dilemma.

Ecuador prides itself on being pro-environment. Its constitution gives nature special rights. But Ecuador is a relatively poor country that could desperately use the money from the oil.

This week saw the end of a years-long, international, multi-billion-dollar battle over one of the most boring things in finance: savings accounts.

At the center of the battle was Iceland, a tiny country where the banks grew into international behemoths during the credit bubble.

The banks got so big partly by convincing foreigners to open up online savings accounts. In particular, lots of people in England and Netherlands opened up "ICESAVE accounts" with a bank called Landsbanki. During the financial crisis, the bank collapsed.

A plain, one-bedroom apartment in Williston, N.D., rents for $2,100 a month. For this price, you could rent a one-bedroom apartment in New York City.

Williston is not New York City. There are 30,000 residents and one department store. The nearest city is two hours away.

Rents are so high in Williston because the town is in the middle of an oil boom. Unemployment is below 1 percent, and workers are flooding into town.

The tortuous negotiations involved in the "fiscal cliff" talks are like a chess game.

To shed some light on the kinds of negotiation techniques that members of Congress might be using during the talks, we asked two negotiators to walk us through their tactics with examples from their everyday lives.

Shawn Rux took over as principal of MS 53, a New York City middle school, last year. At the time, 50 or 60 kids were absent every day. You could understand why they stayed away: The school was chaos.

Twenty-two teachers had quit, the entire office staff had quit, and hundreds of kids had been suspended. The school was given a grade of F from the city's department of education.

"It was in a bad place," Rux says.

Here's a quick rundown on three of the most impenetrable terms related to the fiscal cliff. For more, see our post, The Fiscal Cliff In Three And A Half Graphics.

1. Sequester

Prices change; that's fundamental to how economies work.

And yet: In 1886, a bottle of Coke cost a nickel. It was also a nickel in 1900, 1915 and 1930. In fact, 70 years after the first Coke was sold, you could still buy a bottle for a nickel.

Three wars, the Great Depression, hundreds of competitors — none of it made any difference for the price of Coke. Why not?

The Fairway supermarket in Red Hook, Brooklyn is the sort of place New Yorkers, accustomed to cramped spaces, talk about with amazement. It's an actual, full-size supermarket, right at the edge of New York Harbor.

It's a beautiful setting, but one that was diastrous last week, when Sandy came through.

"There were five feet of water throughout the store," Bill Sanford, the president of the company told me. "Everything was submerged."

They had to throw out dumpsters worth of food. Chicken, fish, vegetables.

Just about every president since Richard Nixon has set energy independence as a goal, and both major candidates have brought it up the current campaign.

As it turns out, there is a place, not so far from here, that has achieved energy independence: Canada.

Canada produces far more oil than it consumes. They're not dependent on the Middle East! They've got all the oil they need!

I called Stephen Gordon, a professor of economics at Université Laval in Quebec City, to ask him about what energy independence means for his nation.

The story of the birth of accounting begins with numbers. In the 1400s, much of Europe was still using Roman numerals, and finding it really hard to easily add or subtract. (Try adding MCVI to XCIV.)

But fortunately, Arabic numerals (1, 2, 3, 4, etc.) started catching on, and with those numbers, merchants in Venice developed a revolutionary system we now call "double-entry" bookkeeping. This is how it works:

We set up our shell companies. Then we wondered: What do people actually do with shell companies?

One popular use, it turns out, is what professionals call "asset protection." Ordinary people call this "hiding money."

Maybe you're a surgeon worried a patient might sue you and take everything you have. Or you want to hide money from your ex (or your soon-to-be ex).