Since 2005 Randall Munroe has been the author/illustrator of the popular nerdy comic strip XKCD -- and he's now planning to publish "the world's least useful self-help book." How To: Absurd Scientific Advice for Common Real-World Problems offers readers a third choice beyond simply doing things either the right way or the wrong way: "a way so monumentally bad that no one would ever try it," according to a new page at XKCD.com: It describes how to cross a river by removing all the water, outlines some of the many uses for lava around the home, and teaches you how to use experimental military research to ensure that your friends will never again ask you to help them move.
To promote the book Munroe has already scheduled visits in 14 nerd-friendly cities (including New York, San Francisco, Seattle, Portland, Los Angeles, and Raleigh). But a final 15th city will be chosen "based on the results of a challenge..." The challenge: Write the best story using nothing but book covers. Arrange the titles of your favorite books into sentences that tell a story, assemble a single continuous line of people holding up the covers, and take a photo or video documenting your feat.

You can make the story as long as you want, but each book needs to be held by a different human. Creative grammar is fine, and you'll get extra credit for including as many books and people as possible.
Photos should be either shared on social media with the hashtag #howtoxkcd, or emailed to that address on Gmail. "Submit your entry between June 10 and July 31," explains the site, adding that a winner will be announced in August.

"Make sure to include your location (city/state, US only) so we know where to find you!"

How many words can you fit in a subtitle? For a slew of modern books, the answer seems to be as many as possible. From a report: Just look at Julie Holland's "Moody Bitches: The Truth About the Drugs You're Taking, the Sleep You're Missing, the Sex You're Not Having, and What's Really Making You Crazy," Erin McHugh's "Political Suicide: Missteps, Peccadilloes, Bad Calls, Backroom Hijinx, Sordid Pasts, Rotten Breaks, and Just Plain Dumb Mistakes in the Annals of American Politics" and Ryan Grim's "We've Got People: From Jesse Jackson to Alexandria Ocasio-Cortez, the End of Big Money and the Rise of a Movement." Blame a one-word culprit: search.

Todd Stocke, senior vice president and editorial director at Sourcebooks, said that subtitle length and content have a lot to do with finding readers through online searches. "It used to be that you could solve merchandising communication on the cover by adding a tagline, blurb or bulleted list," he said. But now, publishers "pack the keywords and search terms into the subtitle field because in theory that'll help the book surface more easily." He should know. Sourcebooks will publish Shafia Zaloom's "Sex, Teens, and Everything in Between: The New and Necessary Conversations Today's Teenagers Need to Have about Consent, Sexual Harassment, Healthy Relationships, Love, and More" in September.

Amazon allows up to 199 characters for a book's title and subtitle combined, making the word combination possibilities, if not endless, vast. Anne Bogel, host of the podcast "What Should I Read Next?," is not generally a fan of the trend. "I don't feel respected as a reader when I feel like the subtitle was created not to give me a feeling of what kind of reading experience I may get, but for search engines," she said. When Bogel asked author friends how they came up with their subtitles, several told her they can't even remember which words they ended up using. That being said, sometimes titular long-windedness works.

A Florida election software company targeted by Russians in 2016 inadvertently opened a potential pathway for hackers to tamper with voter records in North Carolina on the eve of the presidential election, POLITICO reported on Wednesday, citing a document and a person with knowledge. From the report: VR Systems, based in Tallahassee but with customers in eight states, used what's known as remote-access software to connect for several hours to a central computer in Durham County, N.C., to troubleshoot problems with the company's voter list management tool, the person said. The software distributes voter lists to so-called electronic poll books, which poll workers use to check in voters and verify their eligibility to cast a ballot.

The company did not respond to POLITICO's requests for comment about its practices. But election security experts widely condemn remote connections to election-related computer systems -- not only because they can open a door for intruders but because they can also give attackers access to an entire network, depending on how they're configured. In Durham County's case, the computer in question communicated with North Carolina's State Board of Elections to download the county's voter list before elections, which could have potentially opened a gateway to the state system as well.

dryriver writes: Vice/Motherboard writes that since the U.S. Navy admitted that its pilots encounter unidentified flying objects all the time, and mainstream news outlets like the New York Times have devoted coverage to Navy Pilots' UFO encounter stories, old UFO hunters around the world feel vindicated, and many new younger people are taking an interest in the phenomenon.

For decades people who believe in UFOs, UFO lore and take UFO sightings and UFO encounters seriously have been widely ridiculed as stupid, uneducated, gullible, deluded or crazy. Now that highly trained military pilots are talking about encountering UFOs all the time and mainstream media doesn't ridicule UFO sightings anymore — this only took a few decades — a fundamental taboo appears to have been broken. UFO sightings are suddenly real, not a product of overactive imaginations, people mistaking clouds for aliens or people spreading fake news to sell books, seminars and videos.

The question is, why, for so long, did mainstream media systematically ignore and ridicule a phenomenon just about everybody around the world has some knowledge of and had some exposure to? And if UFOs are "officially not crazy" now, what else that still is ridiculed by the MSM may also turn out to be "officially not crazy" in the future?
As a counterpoint, long-time Slashdot reader Martin S. argues that "UFO's are real, they are unidentified flying objects. There is absolutely no evidence that they are Aliens.

"If people continue to equate them with little green men then they can still expect to be ridiculed."

This week the Guardian ran an expose on Google Assistant (Google's version of Alexa or Siri)

"Interpreting a spoken request isn't magic, rather it has taken a team of underpaid, subcontracted linguists to make the technology possible." "It's smoke and mirrors if anything," said a current Google employee who, as with the others quoted in this story, spoke on condition of anonymity because they were not authorized to speak to the press. "Artificial intelligence is not that artificial; it's human beings that are doing the work." The Google employee works on Pygmalion, the team responsible for producing linguistic data sets that make the Assistant work. And although he is employed directly by Google, most of his Pygmalion co-workers are subcontracted temps who have for years been routinely pressured to work unpaid overtime, according to seven current and former members of the team.

These employees, some of whom spoke to the Guardian because they said efforts to raise concerns internally were ignored, alleged that the unpaid work was a symptom of the workplace culture put in place by the executive who founded Pygmalion. That executive was fired by Google in March following an internal investigation. But current and former employees also identified Google's broad reliance on approximately 100,000 temps, vendors and contractors (known at Google as TVCs) for large amounts of the company's work as a culprit.

Google does not directly employ the workers who collect or create the data required for much of its technology, be they the drivers who capture photos for Google Maps' Street View, the content moderators training YouTube's filters to catch prohibited material, or the scanners flipping pages to upload the contents of libraries into Google Books. Having these two tiers of workers -- highly paid full-time Googlers and often low-wage and precarious workers contracted through staffing firms -- is "corrosive", "highly problematic", and "permissive of exploitation", the employees said.

"It's like a white-collar sweatshop," said one current Google employee. "If it's not illegal, it's definitely exploitative. It's to the point where I don't use the Google Assistant, because I know how it's made, and I can't support it."

I loved this story. The Hustle remembers how in 1964 a world-renowned medical professor found a way to beat roulette wheels, kicking off a five-year winning streak in which he amassed $1,250,000 ($8,000,000 today). He noticed that at the end of each night, casinos would replace cards and dice with fresh sets -- but the expensive roulette wheels went untouched and often stayed in service for decades before being replaced. Like any other machine, these wheels acquired wear and tear. Jarecki began to suspect that tiny defects -- chips, dents, scratches, unlevel surfaces -- might cause certain wheels to land on certain numbers more frequently than randomocity prescribed. The doctor spent weekends commuting between the operating table and the roulette table, manually recording thousands upon thousands of spins, and analyzing the data for statistical abnormalities. "I [experimented] until I had a rough outline of a system based on the previous winning numbers," he told the Sydney Morning Herald in 1969. "If numbers 1, 2, and 3 won the last 3 rounds, [I could determine] what was most likely to win the next 3...."

With his wife, Carol, he scouted dozens of wheels at casinos around Europe, from Monte Carlo (Monaco), to Divonne-les-Bains (France), to Baden-Baden (Germany). The pair recruited a team of 8 "clockers" who posted up at these venues, sometimes recording as many as 20,000 spins over a month-long period. Then, in 1964, he made his first strike. After establishing which wheels were biased, he secured a £25,000 loan from a Swiss financier and spent 6 months candidly exacting his strategy. By the end of the run, he'd netted £625,000 (roughly $6,700,000 today).

Jarecki's victories made headlines in newspapers all over the world, from Kansas to Australia. Everyone wanted his "secret" -- but he knew that if he wanted to replicate the feat, he'd have to conceal his true methodology. So, he concocted a "fanciful tale" for the press: He tallied roulette outcomes daily, then fed the information into an Atlas supercomputer, which told him which numbers to pick. At the time, wrote gambling historian, Russell Barnhart, in Beating the Wheel, "Computers were looked upon as creatures from outer space... Few persons, including casino managers, were vocationally qualified to distinguish myth from reality." Hiding behind this technological ruse, Jarecki continued to keep tabs on biased tables -- and prepare for his next big move...

In the decades following Jarecki's dominance, casinos invested heavily in monitoring their roulette tables for defects and building wheels less prone to bias. Today, most wheels have gone digital, run by algorithms programmed to favor the house.

The Environmental Protection Agency plans to change the way it calculates the health risks of air pollution, a shift that would make it easier to roll back a key climate change rule because it would result in far fewer predicted deaths from pollution, New York Times reported this week, citing five people with knowledge of the agency's plans. From the report: The E.P.A. had originally forecast that eliminating the Obama-era rule, the Clean Power Plan, and replacing it with a new measure would have resulted in an additional 1,400 premature deaths per year. The new analytical model would significantly reduce that number and would most likely be used by the Trump administration to defend further rollbacks of air pollution rules if it is formally adopted. The proposed shift is the latest example of the Trump administration downgrading the estimates of environmental harm from pollution in regulations. In this case, the proposed methodology would assume there is little or no health benefit to making the air any cleaner than what the law requires. Many experts said that approach was not scientifically sound and that, in the real world, there are no safe levels of the fine particulate pollution associated with the burning of fossil fuels.

Four years after announcing a 9% tax on streaming entertainment services, the city has collected $2 million in sales tax from Sony and two online ticketing services, making it the first major city to collect such a tax successfully. CBS News reports: The city collected $1.2 million from Sony in January, on services including PlayStation Video live events and purchases of music and video, according to Bloomberg. It also collected nearly $800,000 from Eventbrite and $70,000 from Fandango, the outlet said. The levy has been dubbed the "Netflix tax" because it targets streaming video services in addition to gaming and other digital entertainment.

While Chicago seems to be the first city to successfully tax streaming services, it probably won't be the last. Rhode Island's governor proposed a budget this year that includes new sales taxes on digital videos, books and music. Pennsylvania enacted a similar tax in 2016 and is set to start enforcing it this summer. Chicago's expanded digital entertainment and services tax could raise up to $12 million per year, according to estimates issued at the time it passed in 2015. A lawsuit filed by a libertarian group on behalf of Netflix, Spotify and Amazon Prime customers is currently in the appeal stage.

Northeastern University requires all of its computer science majors to take improv -- a class in theatre and improvisation, taught by professors in the drama department. The Wall Street Journal says it "forces students to come out of their shells and exercise creative play" before they can get their diplomas. (Although when the class was made mandatory in 2016, "We saw a lot of hysterics and crying," says Carla E. Brodley, dean of the computer science department.)

So what happens to the computer science majors at Northeastern? The course requires public speaking, lecturing on such nontechnical topics as family recipes. Students also learn to speak gibberish -- 'butuga dubuka manala phuthusa,' for instance... One class had students stare into a classmate's eyes for 60 seconds. If someone laughed, you had to try again...

The class is a way to 'robot-proof' computer-science majors, helping them sharpen uniquely human skills, said Joseph E. Aoun, the university president. Empathy, creativity and teamwork help students exercise their competitive advantage over machines in the era of artificial intelligence, according to Mr. Aoun, who wrote a book about it... Other professionals agree that improv can teach the teamwork and communication required of working with others. Many software applications now are built in small teams, a collaboration of engineers, writers and designers.

A petition by an angry fan demanding that HBO remake the final season of "Game of Thrones" has now been signed by more than 502,000 people. From a report: Showrunners David Benioff and D.B. Weiss are the target of the petition, which asserts that the pair, who have shepherded the HBO hit from the beginning, "have proven themselves to be woefully incompetent writers when they have no source material (i.e. the books) to fall back on." The show first moved beyond George R.R. Martin's ongoing book series in the sixth season. The online petition, which was started on Change.org by a user called Dylan D., is titled "Remake 'Game of Thrones' season 8 with competent writers" and states that fans of the smash-hit show deserve "a final season that makes sense." [...] The petition originally began with a target of 15,000 signatures, which was reached on Wednesday. A revised target of 300,000 was surpassed Thursday, and a newly revised target is now aiming at half a million signatures. By 8:30 a.m. ET, the petition had been signed by 350,000 "Game of Thrones" fans, with the number of signatories continuing to grow rapidly. Just two hours later it hit 400,000 and by 02:10 p.m. ET it was up to 502,000.

An anonymous reader shares an excerpt from a report via Ars Technica: The Voynich manuscript is a famous medieval text written in a mysterious language that so far has proven to be undecipherable. Now, Gerard Cheshire, a University of Bristol academic, has announced his own solution to the conundrum in a new paper in the journal Romance Studies. Cheshire identifies the mysterious writing as a "calligraphic proto-Romance" language, and he thinks the manuscript was put together by a Dominican nun as a reference source on behalf of Maria of Castile, Queen of Aragon. Apparently it took him all of two weeks to accomplish a feat that has eluded our most brilliant scholars for at least a century. So case closed, right? After all, headlines are already trumpeting that the "Voynich manuscript is solved," decoded by a "UK genius." Not so fast. There's a long, checkered history of people making similar claims. None of them have proved convincing to date, and medievalists are justly skeptical of Cheshire's conclusions as well.

What is this mysterious manuscript that has everyone so excited? It's a 15th century medieval handwritten text dated between 1404 and 1438, purchased in 1912 by a Polish book dealer and antiquarian named Wilfrid M. Voynich (hence its moniker). Along with the strange handwriting in an unknown language or code, the book is heavily illustrated with bizarre pictures of alien plants, naked women, strange objects, and zodiac symbols. It's currently kept at Yale University's Beinecke Library of rare books and manuscripts. Possible authors include Roger Bacon, Elizabethan astrologer/alchemist John Dee, or even Voynich himself, possibly as a hoax. "Cheshire argues that the text is a kind of proto-Romance language, a precursor to modern languages like Portuguese, Spanish, French, Italian, Romanian, Catalan, and Galician that he claims is now extinct because it was seldom written in official documents," the report adds. "If true, that would make the Voynich manuscript the only known surviving example of such a proto-Romance language."

Lisa Fagin Davis, executive director of the Medieval Academy of America, is dubious of Cheshire's claim, tweeting: "Sorry, folks, 'proto-Romance language' is not a thing. This is just more aspirational, circular, self-fulfilling nonsense."

Carl Malamud believes in open access to government records, and he has spent more than a decade putting them online. You might think states would welcome the help. From a report: But when Mr. Malamud's group posted the Official Code of Georgia Annotated, the state sued for copyright infringement. Providing public access to the state's laws and related legal materials, Georgia's lawyers said, was part of a "strategy of terrorism." A federal appeals court ruled against the state, which has asked the Supreme Court to step in. On Friday, in an unusual move, Mr. Malamud's group, Public.Resource.Org, also urged the court to hear the dispute, saying that the question of who owns the law is an urgent one, as about 20 other states have claimed that parts of similar annotated codes are copyrighted.

The issue, the group said, is whether citizens can have access to "the raw materials of our democracy." The case, Georgia v. Public.Resource.Org, No. 18-1150, concerns the 54 volumes of the Official Code of Georgia Annotated, which contain state statutes and related materials. The state, through a legal publisher, makes the statutes themselves available online, and it has said it does not object to Mr. Malamud doing the same thing. But people who want to see other materials in the books, the state says, must pay the publisher.

"Star Wars" actor Peter Mayhew, who played Chewbacca in the original trilogy, died on Tuesday, his family said today. He was 74. He died at his North Texas home surrounded by his family. From a report: He was discovered by producer Charles H. Schneer while working as a hospital attendant in London, and cast in Ray Harryhausen's "Sinbad and the Eye of the Tiger." The next year, he was cast as Chewbacca, the 200-year-old Wookiee. Mayhew went on to appear in "The Empire Strikes Back," "Return of the Jedi," "Revenge of the Sith," "The Force Awakens" and "The Star Wars Holiday Special." He was active on the "Star Wars" convention circuit and wrote two books, "Growing Up Giant" and "My Favorite Giant." His height was not due to gigantism, but he measured 7 feet 3 inches at his highest. George Lucas originally had his eye on bodybuilder David Prowse, but Prowse decided to play Darth Vader instead and Lucas went with the even taller Mayhew.

Canonical's real money comes from the cloud and Internet of Things, but AI and machine learning developers are demanding -- and getting -- Ubuntu Linux desktop with enterprise support. From a report: In a wide-ranging conversation at Open Infrastructure Summit, Mark Shuttleworth, founder of Ubuntu Linux and its corporate parent Canonical, said: "We have seen companies signing up for Linux desktop support, because they want to have fleets of Ubuntu desktop for their artificial intelligence engineers." This development caught Shuttleworth by surprise. "We're starting actually now to commercially support the desktop in a way that we've never been asked to before," he said. Of course, Ubuntu has long been used by developers, but Shuttleworth explained, "Previously, those were kind of off the books, under the table. You know, 'Don't ask don't tell deployments.' "But now suddenly, it's the AI team and they've got to be supported."

In no place was Barnes & Noble's diminished fortune felt as intensely as it was in the Bronx, where gratitude for what it provided far outweighed snobbishness. From a report: Five years ago when Barnes & Noble announced that it was closing the only branch it had opened there, residents and local civic leaders were angry and heartbroken and fought to save it. At the time, there were 90 bookstores in Manhattan. But the Bronx essentially had just the one, and now it would disappear.

Noelle Santos, who worked in human resources, was especially torn up. In 2014 she was on Facebook when she stumbled upon a petition to save Barnes & Noble. It pointed out how alarming it was that the Bronx was getting more and more cellphone stores and chain restaurants but would be left without a place to buy novels or training manuals or SAT preparation guides. Ms. Santos grew up in the Bronx, in Soundview, a rough neighborhood, and she stayed in the Bronx for college and graduate school. But she suddenly felt a radical need to do change things.

"Up to that point I had measured my success by how far I could get away from the Bronx," she told me recently. "I was disappointed in myself for thinking about leaving a community in no better condition that I had found it," she said. "I had never been inside an independent book store before I decided to open one." On Saturday, she will open such a store, The Lit. Bar.

The New York State attorney general's office plans to open an investigation into Facebook's unauthorized collection of more than 1.5 million users' email address books, according to The New York Times, citing two people briefed on the matter. From the report: The inquiry concerns a practice unearthed in April in which Facebook harvested the email contact lists of a portion of new users who signed up for the network after 2016, according to the two people, who spoke on condition of anonymity because the inquiry had not been officially announced. Those lists were then used to improve Facebook's ad-targeting algorithms and other friend connections across the network.

"Facebook has repeatedly demonstrated a lack of respect for consumers' information while at the same time profiting from mining that data," said Letitia James, the attorney general of New York, in a statement. "It is time Facebook is held accountable for how it handles consumers' personal information." The attorney general's investigation will focus on how the practice came about, and whether or not the email contact collection spread to hundreds of millions more people across the social network, according to the two people. Nearly 2.4 billion people use Facebook each month, with 1.56 billion people visiting the site at least once every day.

An anonymous reader quotes a report from the BBC: The team at the University of California, San Francisco says the technology is "exhilarating." They add that their findings, published in the journal Nature, could help people when disease robs them of their ability to talk. The mind-reading technology works in two stages. First an electrode is implanted in the brain to pick up the electrical signals that maneuver the lips, tongue, voice box and jaw. Then powerful computing is used to simulate how the movements in the mouth and throat would form different sounds. This results in synthesized speech coming out of a "virtual vocal tract." "The system is better with prolonged sounds like the 'sh' in ship than with abrupt sounds such as the 'buh' sound in 'books,'" the report adds. "In experiments with five people, who read hundreds of sentences, listeners were able to discern what was being spoken up to 70% of the time when they were given a list of words to choose from."

"At the first annual charity event conducted by Puget Sound Programming Python on April 2, four legendary language creators came together to discuss the past and future of language design," reports PacktPub.

- Guido van Rossum, the creator of Python
- James Gosling, the founder, and lead designer behind the Java programming language
- Anders Hejlsberg, the original author of Turbo Pascal who has also worked on the development of C# and TypeScript
- Larry Wall, the creator of Perl

You can watch the video here -- the speaker introductions start about 50 minutes into the video-- or read PacktPub's summary of the event: Guido van Rossum said designing a programming language is very similar to the way JK Rowling writes her books, the Harry Potter series... He says JK Rowling is a genius in the way that some details that she mentioned in her first Harry Potter book ended up playing an important plot point in part six and seven... When designing a language we start with committing to certain details like the keywords we want to use, the style of coding we want to follow, etc. But, whatever we decide on we are stuck with them and in the future, we need to find new ways to use those details, just like Rowling...

When James Gosling was asked how Java came into existence and what were the design principles he abided by, he simply said, "it didn't come out of like a personal passion project or something. It was actually from trying to build a prototype.... It started out as kind of doing better C and then it got out of control that the rest of the project really ended up just providing the context." In the end, the only thing out of that project survived was Java...

Larry Wall wanted to create a language that was more like a natural language. Explaining through an example, he said, "Instead of putting people in a university campus and deciding where they go we're just gonna see where people want to walk and then put shortcuts in all those places." A basic principle behind creating Perl was to provide APIs to everything. It was aimed to be both a good text processing language linguistically but also a glue language....

Similar to the views of Guido van Rossum, Anders Hejlsberg adds that any decision that you make when designing a language you have to live with it. When designing a language you need to be very careful about reasoning over what "not" to introduce in the language.
There was also some discussion of types -- Gosling believes they help improve performance, while Hejlsberg said types are also useful when building coding tools. "It turns out that you can actually be more productive by adding types if you do it in a non-intrusive manner and if you work hard on doing good type inference and so forth." In fact, Hejlsberg told the audience that the TypeScript project was inspired by massive "write-only" JavaScript code bases, while a semantic understanding (including a type system) makes refactoring easier.

Guido van Rossum acknowledged that TypeScript "is actually incredibly useful and so we're adding a very similar idea to Python. We are adding it in a slightly different way because we have a different context.... I've learned a painful lesson, that for small programs dynamic typing is great. For large programs, you have to have a more disciplined approach. And it helps if the language actually gives you that discipline, rather than telling you, 'Well, you can do whatever you want.'"

In the video Larry Wall says the Perl 6 team had also noticed the limitations of loose typing, and added a robust type system to Perl 6 to "help with programming in the large."

This was the first annual benefit for CSforALL, a group promoting high-quality computer science classes at every grade level.

An anonymous reader quotes a report from The Guardian: It's just as you suspected; the information age has changed the general attention span. A recently published study from researchers at the Technical University of Denmark suggests the collective global attention span is narrowing due to the amount of information that is presented to the public. Released on Monday in the scientific journal Nature Communications, the study shows people now have more things to focus on -- but often focus on things for short periods of time.

The researchers studied several modes of media attention, gathered from several different sources, including (but not limited to): the past 40 years in movie ticket sales; Google books for 100 years; and more modernly, 2013 to 2016 Twitter data; 2010 to 2018 Google Trends; 2010 to 2015 Reddit trends; and 2012 to 2017 Wikipedia attention time. The researchers then created a mathematical model to predict three factors: the "hotness" of the topic, its progression throughout time in the public sphere and the desire for a new topic, said Dr Philipp Hovel, an applied mathematics professor of University College Cork in Ireland. The empirical data found periods where topics would sharply capture widespread attention and promptly lose it just as quickly, except in the cases of publications like Wikipedia and scientific journals. For example, a 2013 Twitter global trend would last for an average of 17.5 hours, contrasted with a 2016 Twitter trend, which would last for only 11.9 hours.

Scientists have uncovered the first strong evidence that the amount of plastic polluting the oceans has risen vastly in recent decades -- by analyzing 60 years of log books for plankton-tracking vessels. Nature reports: Data recorded by instruments known as continuous plankton recorders (CPRs) -- which ships have collectively towed millions of kilometres across the Atlantic Ocean -- show that the trackers have become entangled in large plastic objects, such as bags and fishing lines, roughly three times more often since 2000 than in preceding decades. This is the first time that researchers have demonstrated the rise in ocean plastics using a single, long-term data set, says Erik van Sebille, an oceanographer at Utrecht University in the Netherlands. "I'm excited that this has been finally done," he says. The analysis was published on 16 April in Nature Communications.

Van Sebille says that because the study focused on large plastic items, it doesn't reveal much about the quantity of microplastics -- fragments fewer than 5 millimetres long -- in the oceans. These tiny contaminants come from sources such as disposable plastic packaging, rather than from fishing gear. Nevertheless, he adds, the study demonstrates that fisheries play a major part in plastic pollution, and will provide useful baseline data for tracking whether policy changes affect the levels of plastic in the oceans. "As fisheries become more professional, especially in the North Sea, hopefully we might see a decrease," he says.