The Postal Service plans to stop delivering regular mail on Saturday. Mathematician Curtis Cooper talks about his discovery of the longest prime number. Thousands of people who had their homes destroyed by Hurricane Sandy four months ago are still living in hotel rooms, rentals or crashing with friends and family. A new startup aims to help those without bank accounts or credit cards pay for stuff online. As Hasbro gets rid of the iron token in its Monopoly game, we look at the innovations behind the iron’s real-world demise. And In the latest installment of Freakonomics Radio, Kai Ryssdal recalls some memories in a conversation with Stephen Dubner — only to find out how deceiving our minds often are.

Dell has reached a $24 billion deal to take itself private, but what will the company do with that money? The Justice Department is suing Standard & Poors over its bond ratings in the lead up to the financial crisis. Wednesday is the big day high school football recruits send letters of intent to the universities they plan to attend and play for — and at the center of the process: the semi-antiquated fax machine. Dan Gorenstein reports on the rise of the survivalist industry. And Kai Ryssdal talks to author Amy Webb about how she devised her own algorithm for dating and found the perfect match.

In the first in a series of profiles about disappearing professions, a film projectionist says his predecessors had promised him a life-long career. As the Dow Jones Industrial Average hovers near 14,000 points, Mark Garrison reminds us that good news is often scary. A digital advertising director talks about whether Twitter ads during the Super Bowl might have delivered more bang for the buck than the flashy spots on TV. Smart security cameras aren’t only capturing you as you walk into a store — they’re capturing your data too. And Dan Bobkoff reports on a school in New York experimenting with paying its teachers very, very well.

After a dramatic slump during the recession, Boise, Idaho’s economy has returned to good health. The income tax is celebrating its 100th birthday this year. With an improving housing market comes more open houses, and Jim Burress reports on the ‘lookie-loos’ turning out to see their neighbors’ cribs. Ticketmaster is doing away with those annoying things known as ‘captchas,’ which make sure you’re not a robot. And Grantland’s Wesley Morris talks about the business behind filmmaking.

In the latest Converation from the Corner Office, Kai Ryssdal talks to Sue Gardner, CEO of WikiMedia, about Wikipedia’s global plans and the online encyclopedia’s need for more female editors. New research suggests that millennials deal with credit card debt differently than past generations. Wired magazine’s Kim Zetter discusses the Chinese hacking of the New York Times. With Alicia Keys being named a creative director for Blackberry — day after tweeting from her iPhone — we look into the complications of celebrity endorsements. And Scott Tong explores how lithium ion batteries are crucial in technology.

The economy shrunk for the first time since 2009, but the decline isn’t causing too much panic. JCPenney has decided to bring back sales and discounts. The president’s two-year-old council on job creation closes up shop this week — we look back at what they accomplished. Harvard University will study the link between football and concussions over the next decade. There’s a smog cloud over Eastern China that’s three times the size of California. Immigration reform could mean rising wages, and that could affect small businesess. And in the latest BURN story, Alex Chadwick reports on the innovation to build the fastest car in the world.

Scott Tong discusses the details of the BP settlement for the 2010 oil well spill in the Gulf of Mexico. The Blackberry 10 is set to unveil tomorrow and many wonder if the device can turn things around for Research in Motion. We explore whether Super Bowl ads really boost sales. Restaurant reservation website OpenTable is buying Foodspotting, a smartphone app that lets diners share photos of their meals. The Pentagon is starting to lay off its temporary employees because of budget uncertainties. And Krissy Clark looks at what having more legal immigrants in the country would do for the economy.

As the debate heats up over reforming immigration laws, Krissy Clark reports on the role played by the 11 million undocumented immigrants in the nation’s economy. Retailers now can charge extra when they swipe a credit card. The Library of Congress has special powers when it comes to deciding how you use your cell phones, tablets and other technology. New York Times television reporter Brian Stelter talks about the Los Angeles Dodgers’ new channel and whether the cable TV financial model will change anytime soon. There’s a plan to build a new library in San Antonio, Texas — that holds no books. And reporter Peter O’Dowd explains why he didn’t give up his underwater home.

David Gura pays a visit and reports from inside a Virginia gun store. Twitter’s newest service lets users post six-second videos, but some are complaining that’s too short. Apple’s latest supplier responsibility report goes deeper than ever into its Chinese supply chain. We look into whether the legal costs in the fight between Barbie and Bratz has been worth it. The European Union’s market for carbon emissions credits is crashing, but the EU isn’t ready to bail it out. And Las Vegas oddsmaker Jimmy Vaccaro talks about proposition bets related to the Super Bowl.