sciencehabit shares a report from Science Magazine: U.K. soccer star David Beckham was known for "bending" his free kicks over walls of defenders and around sprawling goal tenders, thanks to a physical force called the Magnus effect. Now, the physics behind such curving kicks is set to be used to propel ocean ships more efficiently. Early next year, a tanker vessel owned by Maersk, the Danish transportation conglomerate, and a passenger ship owned by Viking Line will be outfitted with spinning cylinders on their decks. Mounted vertically and up to 10 stories tall, these "rotor sails" could slash fuel consumption up to 10%, saving transportation companies hundreds of thousands of dollars and cutting soot-causing carbon emissions by thousands of tons per trip.

Rotor sails rely on a bit of aerodynamics known as the Magnus effect. In the 1850s, German physicist Heinrich Gustav Magnus noticed that when moving through air a spinning object such as a ball experiences a sideways force. The force comes about as follows. If the ball were not spinning, air would stream straight past it, creating a swirling wake that would stretch out directly behind the ball like the tail of a comet. The turning surface of a spinning ball, however, drags some air with it. The rotation deflects the wake so that it comes off the ball at an angle, closer to the side of the ball that's rotating into the oncoming air. Thanks to Isaac Newton's third law that every action must have an equal and opposite reaction, the deflected wake pushes the ball in the opposite direction, toward the side of the ball that's turning away from the oncoming air. Thus, the spinning ball gets a sideways shove.

theodp writes: After a flood of cheating cases roiled Harvard's Computer Science 50: "Introduction to Computer Science I" last year, Dean of Undergraduate Education Jay Harris implored students in the course not to cheat on assignments at an orientation session Wednesday night. Course head David Malan, the Harvard Crimson reports, spent the last five minutes of the orientation session fielding questions from students confused about the course's collaboration policy and whether or not CS50 enrollees are allowed to use code found online. He told them never to Google solutions, and never to borrow a friend's work. Last week, CS50 students were informed via a CS50 FAQ that they are also now "encouraged" to physically attend the course's taped weekly lectures. In an essay last year, Prof. Malan had questioned the value of saying everyone should attend every lecture. Attendance is now also expected at every discussion section until the first mid-semester exam. In case you're curious, the estimated sticker price for attending Harvard College during the 2017-2018 school year is $69,600-$73,600 (health insurance sold separately).

Disney CEO Bob Iger announced on Thursday that his company will pull the full catalog of films from the Star Wars franchise and Marvel universe from Netflix after 2019. Last month, Disney announced it would be pulling a number of Disney titles from the Netflix catalog, but left the door open to keeping the Star Wars franchise and Marvel films. That door has since been slammed shut, "choosing instead to use movies like Iron Man, Captain America, and the forthcoming Star Wars: Episode IX as a draw to a new Disney-owned streaming service," reports Ars Technica. From the report: It's not clear exactly which films are affected by Iger's announcement. A Netflix spokesperson told The Verge last month that "we continue to do business with the Walt Disney Company on many fronts, including our ongoing deal with Marvel TV." That refers to a collaboration between Disney and Netflix to produce several live-action television series based on lesser-known Marvel characters Daredevil, Jessica Jones, Iron Fist, and Luke Cage. Some of those series are still being actively developed. It's a high-risk gamble for Disney. It makes sense for Disney to bring its best-known franchises back under its own roof to give the Disney streaming service the best possible chance of success. But Disney is leaving a lot of money on the table by not doing a deal with Netflix or one of its competitors. It could be an expensive mistake if the Disney streaming service doesn't get traction.

Equifax, which supplies credit information and other information services, said Thursday that a cybersecurity incident discovered on July 29 could have potentially affected 143 million consumers in the U.S. "The leaked data includes names, birth dates, social security numbers, addresses and potentially drivers licenses," reports CNBC. "209,000 U.S. credit card numbers were also obtained, in addition to 'certain dispute documents with personal identifying information for approximately 182,000 U.S. consumers."

Chairman and Chief Executive Officer, Richard F. Smith said in a statement: "This is clearly a disappointing event for our company, and one that strikes at the heart of who we are and what we do. I apologize to consumers and our business customers for the concern and frustration this causes. We pride ourselves on being a leader in managing and protecting data, and we are conducting a thorough review of our overall security operations. We also are focused on consumer protection and have developed a comprehensive portfolio of services to support all U.S. consumers, regardless of whether they were impacted by this incident." Equifax is now alerting customers whose information was included in the breach via mail, and is working with state and federal authorities.

UPDATE (9/7/17): According to Bloomberg, "three Equifax senior executives sold shares worth almost $1.8 million" in the days after the company discovered the security breach. Regulatory filings show that three days after the breach was discovered on July 29th, Chief Financial Officer John Gamble sold shares worth $946,374 and Joseph Loughran, president of U.S. information solutions, exercised options to dispose of stock worth $584,099." Meanwhile, "Rodolfo Ploder, president of workforce solutions, sold $250,458 of stock on Aug. 2."

Shan Wang, writing for Neiman Lab: Sixty-seven percent of Americans report getting some of their news via social media at some point, according to a Pew Research survey of just under 5,000 U.S. adults conducted last month and published Thursday. That overall percentage is only up slightly from 62 percent in 2016, in the run-up to the November election. But among specific demographics, using social media for news has increased: 74 percent of non-white U.S. adults now get news from social media, up from 64 percent of that group who got news that way in 2016. Fifty-five percent of Americans 50 and older say the have gotten news from social media, up from 45 percent (older people are also driving the increasing percentage of people who get news via mobile). Facebook is still the dominant social media source for news. But when Pew looked at the percentage of users on each social media platform who were using it for news, it was Twitter, Snapchat, and YouTube that saw increases (remember that user bases are vastly different sizes, from YouTube to Facebook to Tumblr to Twitter):

Artem Tashkinov writes: Soon to be released Firefox 56 says that out of 35+ add-ons that I have installed only a single one is a proper WebExtension which means that Firefox 57 will disable over 95% of my add-ons many of which I just cannot live without and for most of them there are simply no alternatives. This number of add-ons sound like an overkill, but actually they are all pretty neat and improve your browsing abilities. That's the reason why I'm using Firefox 52 ESR, which still fully supports XUL add-ons, however after June 2018, it will stop being supported.

Let's list the most famous ones:

• DownThemAll is still largely irreplaceable since you can download from many parts of the internet much faster if you split the downloaded files in chunks and download them simultaneously;
• GreaseMonkey allows you to fix or extend your favourite websites using JavaScript;Lazarus: Form Recovery has saved my time and life numerous times; it regularly backups the contents of web forms and allows to restore them after browser restart or accidental page refresh;
• NoScript: allows you to whitelist JS execution only for websites that you really trust; JS has been used as an attack and tracking tool since its inception;
• Status-4-Ever and Classic Theme Restorer return Firefox to the time when it was a powerful tool with its own identity and looks, and not a Chrome clone;
• UnMHT add-on allows you to save complete web pages as a single MHT file;

So what will you do less than a year from now?

Eugene Kim, reporting for CNBC: Shortly before Amazon Prime Day in July, the owner of the Brushes4Less store on Amazon's marketplace received a suspension notice for his best-selling product, a toothbrush head replacement. The email that landed in his inbox said the product was being delisted from the site because of an intellectual property violation. In order to resolve the matter and get the product reinstated, the owner would have to contact the law firm that filed the complaint. But there was one problem: the firm didn't exist. Brushes4Less was given the contact information for an entity named Wesley & McCain in Pittsburgh. The website wesleymccain.com has profiles for five lawyers. A Google image search shows that all five actually work for the law firm Brydon, Swearengen & England in Jefferson City, Missouri. The phone number for Wesley & McCain doesn't work while the address belongs to a firm in Pittsburgh called Robb Leonard Mulvihill. The person who supposedly filed the complaint is not registered to practice law in Pennsylvania. One section on Wesley & McCain's site stole language from the website of the Colby Law Office. The owner of Brushes4Less agreed to tell his story to CNBC but asked that we not use his name out of concern for his privacy. As far as he can tell, and based on what CNBC could confirm, Amazon was duped into shutting down the seller's key product days before the site's busiest shopping event ever.

Yoko Kubota, Tripp Mickle, and Takashi Mochizuki, reporting for WSJ: Apple's new iPhone, which is expected to be unveiled Tuesday, was plagued by production glitches early in the manufacturing process this summer, according to people familiar with the situation, which could result in extended supply shortfalls and shipping delays when customers start ordering the device later this month (alternative source). New iPhones are typically in short supply when first released. But if shortfalls of the new phone extend beyond the initial sales period, which is expected to begin September 22, they could weaken analysts' and investors' projections for sales in the crucial holiday period. The production glitches led to a setback of about a month in the manufacturing timetable. Foxconn, the Apple contractor that assembles iPhones, has been ramping up production at its manufacturing complex in Zhengzhou, China. The company is paying bonuses to employees who can help bring new hires on board at its Zhengzhou plant, which Foxconn said in June employs about 250,000 people.

Amazon has been working for years to clean its sites of fake reviews and fake products. It's still got work to do. From a report: The online retailer on Wednesday filed five separate legal actions through the American Arbitration Association to cut down on a variety of alleged scams used to make money on Amazon's Kindle self-publishing service, according to documents obtained by CNET. "Today's news reflects yet another step in our ongoing efforts to protect readers and authors from individuals who violate our terms of service and manipulate programs readers and authors rely on," an Amazon spokesman said in a statement. He added that only a "small minority" of those using Kindle Direct Publishing engage in such scams. Amazon since 2015 has been using these kinds of legal actions to fight against scams and already sued over 1,000 entities involved in allegedly creating fake product reviews on its sites. The company last year also sued alleged counterfeiters. As part of Wednesday's filings, one alleged scammer used a novel approach to try making money through Amazon. The man named in the filing, Nilmer Rubio, of Olongapo City in the Philippines, allegedly reached out to authors who used the Kindle self-publishing platform and told them he could artificially inflate the number of pages customers read of their books in two Kindle programs. He apparently did this with the use of hundreds of Amazon accounts he created.

Mobile and fixed broadband internet speeds in the U.S. are improving, but not all carriers and providers are created equal and not all areas of the country are benefitting equally from fast speeds. From a report: Those are the findings according to a new market report from Speedtest by Ookla out of Seattle, which relied on data it captured from user-initiated tests during the first half of 2017. And for customers using T-Mobile for mobile internet and Comcast Xfinity for broadband, the results are especially good. Speedtest credits infrastructure investments and upgrades as well as increased affordability of higher tiered packages for the fact that fast broadband keeps getting faster. The average download speed in the U.S. over fixed broadband during Q1 to Q2 was 64.17 Mbps (ranking 15th in the world) and average upload speed was 22.79 Mbps (24th in the world). Xfinity is the top provider when it comes to Speed Score -- which incorporates low-end, median and top-end performance for both download and upload speed -- with a score of 69.58. Speedtest says that Comcast has been aggressively seeding the market over the past year with advanced modems capable of delivering a more consistent experience for customers. The cable provider has also been increasing the amount of DOCSIS 3.1 channels in order to deliver faster speeds, according to the report.

According to analysis by consulting firm Counterpoint Research, China's leading smartphone marker, Huawei, surpassed Apple's global smartphone sales for the first time in June and July. The company is only behind Samsung in sales. The Verge reports: Figures haven't been released yet for August, though Counterpoint indicates sales for that month also look strong. However, it's worth noting that with Apple's new iPhone releases just around the corner, the iPhone maker is almost certain to get back on top in September. Researchers at Counterpoint also point out that Huawei has a weak presence in the South Asian, Indian, and North American markets, which "limits Huawei's potential to the near-to-mid-term to take a sustainable second place position behind Samsung." Its strongest market is China, and it's also popular in Europe, Latin America, and the Middle East. Still, Apple doesn't have much to worry about; Counterpoint says the iPhone 7 and 7 Plus remain the world's best-selling smartphones, while Oppo's R11 and A57 claimed the third and fourth spots, respectively, followed by Samsung's Galaxy S8, Xiaomi's Redmi Note 4X, and Samsung's Galaxy S8 Plus. Surprisingly, despite overtaking Apple in global sales, none of Huawei's phones appear on the Top 10 list.