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Update at 5:50 p.m. ET

OPEC oil ministers have agreed to keep production levels steady, virtually ensuring continued low prices at the gas pump and lower costs for jet fuel that could translate into cheaper air-ticket prices.

Reuters reports: "Benchmark Brent futures settled at $72.58 a barrel, down $5.17, after hitting a four-year low of $71.25 earlier in the session. The contract was on track for its biggest monthly fall since 2008. U.S. crude was last down $4.64 at $69.05 a barrel."

According to The Wall Street Journal, during a meeting in Austria, members of the Organization of Petroleum Exporting Countries "agreed to stick to the oil-producer group's existing output target of 30 million barrels of oil a day, a decision that implies it will cut production from recent levels but stops some way short of the action likely required to boost sagging global oil prices." Here's more:

"Sticking to its current production ceiling of 30 million barrels a day would involve an OPEC supply cut of around 300,000 barrels a day based on the cartel's output in October.

"Oil prices plunged on the news, with Brent crude down 3.2%."

Crude prices have dropped significantly as stepped-up production in the U.S. and Canada and more fuel-efficient cars have caused output to outstrip demand. China has also taken advantage of low prices to increase its strategic petroleum reserve as a cushion against future oil shocks.

The inability of OPEC to agree to cut production in an effort to stabilize prices was widely expected.

According to Reuters: "Some analysts have said that oil prices could slide to $60 per barrel if OPEC does not agree to a significant output cut. Benchmark Brent futures dropped over $1 on Thursday to $76.28 a barrel, the lowest level since September 2010. U.S. crude also dropped over $1 to a session low of $72.61."

The Russian ruble weakened against the U.S. dollar on the news. Although Russia, a major petroleum exporter, is not a member of OPEC, the organization's decisions have a broad impact on the global industry.

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For many online retailers, Cyber Monday is likely to be the peak shopping day of the year. To handle the onslaught of orders, Amazon has begun rolling out a new robot army.

The Amazon order-fulfillment center in Tracy, Calif., is more than a million square feet — or 28 football fields, if you prefer — filled with orange and yellow bins flying this way and that on conveyor belts. Chances are, if you ordered a bunch of items in the San Francisco Bay Area recently, Amazon put that box together here.

"Whether it's consumables or toys or electronics, with 3,500,000 items plus in this building, the odds are, pretty much anything you wanted was likely here," says Dave Clark, Amazon's senior vice president of worldwide operations and customer service.

At most warehouses, goods are held on shelves, and it's up to humans to go out into them to stock or retrieve stuff. But with technology that Amazon acquired when it purchased Kiva Systems in March 2012, the goods move to the humans. Orange robots the shape and size of ottomans zip under shelves, lift them up and whisk them to stations where people like Amazon's Reginaldo Rosales are waiting.

As each shelf arrives next to Rosales, packed to the gills with all sorts of items, a computer terminal displays the specific thing he's supposed to grab — in this case a thermometer — and where on the shelves it is.

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Dolls depicting Elsa from the Disney film Frozen — the movie's merchandise is expected to be the most popular gift for girls this holiday season — await pickup Sunday at an Amazon warehouse in Tracy, Calif. Rachael Myrow/KQED hide caption

itoggle caption Rachael Myrow/KQED

Dolls depicting Elsa from the Disney film Frozen — the movie's merchandise is expected to be the most popular gift for girls this holiday season — await pickup Sunday at an Amazon warehouse in Tracy, Calif.

Rachael Myrow/KQED

"Now it's telling us the Monopoly electronic banking game," Rosales says. "We pick the item, we give a six-sided check — make sure it's not damaged — and it tells us what bin. And you confirm it."

Kiva's concept has been around for years now, but this rollout provides an opportunity to see it at great scale.

With this system, not only is there no need for workers to march for miles up and down the aisles — there's no need for aisles at all, which means Amazon can squeeze 50 percent more product into its warehouses.

You might presume this means Amazon would hire fewer humans, but Senior VP David Clark says Amazon is hiring more people — 14 percent more than during 2013's holiday season — to accommodate increased demand.

"As these buildings get more selection, they do more volume," Clark says.

Besides, an entirely mechanical workforce simply wouldn't work yet, says Massachusetts Institute of Technology researcher Andrew McAfee, for the same reasons robots still would make lousy doubles tennis partners.

"Robots aren't really, really good at manual dexterity. Their vision systems are often not as good as our vision systems," McAfee says.

But the co-author of The Second Machine Age says the robots are at least as good as people at covering ground in warehouses and hauling merchandise. So why not let them do it?

There are 15,000 Kiva machines whisking around Amazon warehouses across the country; the company's engineers already are developing a next-generation robot.

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Around this time every year, retailers gird their loins and prepare to slash prices for the holiday shopping season. For many stores, Black Friday and Cyber Monday are opportunities to clear old stock (at a mild loss) and trigger a surge of spending that carries on well into December. Deals on toys, televisions and tablets are meant to pull you into stores, where you're likely to splurge on other things like towels ... or perhaps a new cellphone.

Depending on when and where you look this week you'll be able to snag a new flagship class phone for as little as a penny if you're willing to sign a 2-year contract. There are a few contract-free devices being discounted this weekend, but the bulk of them aren't exactly the amazing "doorbusters" they're being advertised as. They're throwaway phones meant for short-term use. That's not a knock against the cheap phone market, however. In fact, some of the most interesting developments in cellphone tech are focused on the so-called "low end."

Once upon a time when you walked into a store looking to buy a new cell phone, you were presented with three options. High-end devices like Apple's iPhone and Samsung's Galaxy line were cutting edge, but expensive. Mid-range phones like HTC's Desire series were cheaper, but not nearly as powerful. Low-end phones were the most affordable, but also the most technologically limited of the bunch. Their processors were slower, their screens were less crisp, and their build quality often left much to be, well, desired.

Looking at the market today, many things are the same. High-end phones are still pricey and aspirational while the midrange is still middling. Cheap smartphones, however, are in a state of disruption. Bargain-basement gadgets are giving way to bigger, better devices that are just as affordable. Manufacturers like Microsoft, Motorola and OnePlus are redefining what an affordable cellphone can do, and demanding that we put the term "low end" to rest.

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The New Low End

Before it was officially acquired by Microsoft, Nokia released the Lumia 520, 521 and 525 handsets that quickly became the most popular Windows phones in the world. A sub-$100 price point and fairly smooth everyday use made the series ideal for first-time smartphone users. Since then, Microsoft has rolled out more cheap models that feature significant hardware upgrades, while maintaining ridiculously low price points. Entry-level Lumias demonstrated what companies could accomplish by building software meant to run on simpler, cheaper hardware.

For the most part, the low-end smartphone market is dominated by Android. With Windows Phone 8, however, Microsoft targeted one of Android's biggest weaknesses — performance. As powerful and customizable as Android is, it has a track record of poor performance on phones with lower specs. Windows Phone may not be as popular as Android, but it's a relatively standardized platform — meaning that using one Windows Phone feels like using nearly every Windows phone.

Rather than treating the low end as an afterthought, Microsoft began the trend of treating it as an opportunity to provide all consumers with a compelling experience.

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Not long after Microsoft's foray into the new "low end," Motorola followed suit with the Moto G, a $180 off-contract phone meant to perform like a flagship. Similar to the Lumias, the Moto G became a record success for Motorola and challenged what low-cost Android phones could be.

The rising quality of smartphones priced under $200 is making them more attractive to the average consumer, but the low end is being redefined from above as well.

Redefining The Flagship

There's nothing technically low-end about the OnePlus One except for its price. At $299 off contract, OnePlus's "flagship killer" is more expensive than most of Microsoft's Lumias or the Moto G. Compared to the iPhone 6 ($649), the LG G3 ($699), and the Samsung Galaxy Note 4 ($949), however, the OnePlus One is ludicrously priced. The OnePlus One features the same high-end components as its competitors, but has opted for a different kind of business model, which OnePlus co-founder Carl Pei likens to that of a startup.

"In building our company, we wanted to challenge the status quo," Pei explained in an interview. "By selling directly to consumers and utilizing social media and our online community to create interest, we were able to put a lot more value back into the device itself."

OnePlus's One phone manages to provide a high-end experience at a relatively low price point. OnePlus hide caption

itoggle caption OnePlus

Unlike most other phones, the OnePlus One can only be bought online after receiving an invitation from the company or a friend who's purchased the phone. The system does the double duty of generating buzz around the device and allowing OnePlus to maintain a careful, cost-effective balance between supply and demand. Pei says OnePlus' focus isn't necessarily on its competition. It's on how people are purchasing their phones.

"Increasingly, people are starting to understand the true cost of signing a contract, and we want to make it easier to purchase a high-end device without having to give a large portion of money to a middleman," Pei said. "We're here to show everyone what's possible once you step outside of the traditional rules of the smartphone market."

The traditional rules of the smartphone market are what burned Amazon's ill-fated Kindle Fire Phone earlier this year and drove the company to discount the phone to a more reasonable $199 off-contract price. Today more Americans are buying smartphones under $200, and the market is responding.

ARM, the company that designs most of the world's cellphone processors, projects that by 2018 1 billion low-end smartphones will ship compared to 250 million high-end devices. What those devices will look like exactly is unclear, but it's obvious that the low-end market that we knew is evolving into something bigger, stronger and cheaper than ever.

Charles Pulliam-Moore is an intern at NPR's Code Switch who has a not-so-secret passion for mobile gadgetry. He tweets about tech, culture and the occasional pocket monster @CharlesPulliam.

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A recent hack of Sony Pictures resulted in a leak of at least five of the company's movies and the disabling of its corporate networks and email. The attack began last Monday, when screens at Sony displayed the words "Hacked By #GOP," as well as images of a skull. (#GOP reportedly stands for Guardians of Peace.) According to NBC News, an accompanying message "threatened to release 'secrets and top secrets' of the company."

The Los Angeles Times' Ryan Faughnder told NPR's Melissa Block that the hack caused major disruption at Sony last week. "They were going pretty old school," Faughnder said. "[Employees] were going on Facebook saying people would have to be calling them on traditional land lines. They'd have to use pens and paper. They'd booted up their fax machines. People were even using chalkboards, reportedly, to do business."

Faughnder says the hackers told Sony they have personal data on actors attached to Sony films and Sony financial data that they will leak as well.

Film leaks were another result of the hack. The Sony films Annie, Mr. Turner, Still Alice, To Write Love on Her Arms and Fury were released to file-sharing websites last week. Only Fury, a war film starring Brad Pitt, is currently in theaters, yet according to the consulting group Excipio, it's been downloaded the most.

Variety speculates on the reason behind the hacks and film leaks:

"Since the attack, some observers have speculated that the SPE network takedown was somehow related to "The Interview," the studio's geopolitical spoof starring James Franco and Seth Rogen (pictured above). In the film, slated for Dec. 25 release, Franco is host of latenight talkshow "Skylark Tonight" and Rogen plays his best friend and producer. When the duo secure an interview with Kim Jong-un, the mysterious and ruthless North Korean dictator, they are approached by the CIA and asked to assassinate the Korean leader."

The Telegraph reports that a spokesperson for Kim Jong-Un says the movie shows the "desperation" of American society.

The LA Times' Faughnder says Sony has recruited an IT forensics firm to investigate the security breach, and the FBI has launched an investigation into the matter as well. Today, Voice of America reported that North Korean officials said "wait and see" when asked if the country was involved in the hack.

Meanwhile, Seth Rogen, one of the directors and stars of The Interview, has continued to tweet about the movie. Last week, he shared a new trailer, with the words, "North Korea couldn't stop us!!! Here's the newest trailer for The Interview!!!"

North Korea couldn't stop us!!! Here's the newest trailer for The Interview!!! http://t.co/EAICoJJiFi

— Seth Rogen (@Sethrogen) November 25, 2014

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