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  • ¿Cómo pensar como Sherlock Holmes? - Maria Konnikova November 17, 2017
    Ningún personaje de ficción es más conocido por sus poderes de intuición y observación que Sherlock Holmes. Pero, ¿es su inteligencia extraordinaria una invención de la ficción o podemos aprender a desarrollar estas habilidades, para mejorar nuestras vidas en el trabajo y en casa? A través de ¿ Cómo pensar como Sherlock Holmes? , la periodista y psicóloga Ma […]
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  • La teoría del todo - Stephen W. Hawking November 17, 2017
    Una manera clara y amena de acercarse a los misterios del universo. En esta esclarecedora obra, el gran físico británico Stephen Hawking nos ofrece una historia del universo, del big bang a los agujeros negros. En siete pasos, Hawking logra explicar la historia del universo, desde las primeras teorías del mundo griego y de la época medieval hasta las más com […]
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  • La física del futuro - Michio Kaku November 17, 2017
    Un recorrido asombroso a través de los próximos cien años de revolución científica. El futuro ya se está inventando en los laboratorios de los científicos más punteros de todo el mundo. Con toda probabilidad, en 2100 controlaremos los ordenadores a través de diminutos sensores cerebrales y podremos mover objetos con el poder de nuestras mentes, la inteligenc […]
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  • El cisne negro. Nueva edición ampliada y revisada - Nassim Nicholas Taleb November 17, 2017
    ¿Qué es un cisne negro? Para empezar, es un suceso improbable, sus consecuencias son importantes y todas las explicaciones que se puedan ofrecer a posteriori no tienen en cuenta el azar y sólo buscan encajar lo imprevisible en un modelo perfecto. El éxito de Google y You Tube, y hasta ell 11-S, son “cisnes negros”. Para Nassim Nicholas Taleb, los cisnes negr […]
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  • Sobre la teoría de la relatividad especial y general - Albert Einstein November 17, 2017
    Entre el Electromagnetismo y la Mecánica newtoniana existe una fórmula de bisagra: la teoría de la relatividad especial y general. La importancia del nuevo marco planteado por Albert Einstein se entiende por lo siguiente: la percepción del tiempo y el espacio es relativa al observador. ¿Qué significa esto? Si usted viaja a una velocidad mayor que la de la lu […]
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  • Tricks Any Dog Can Do! - Susan Day November 17, 2017
    This great book comes with advice and guidance as to the best way to teach these tricks. It offers more than one method which the reader can choose depending upon their own situation. There is also advice to using treats and shows you how to not end up with a treat junkie! This books is from the desk of Susan Day, a canine behaviourist. Susan teaches obedien […]
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  • Ágilmente - Estanislao Bachrach November 17, 2017
    Bachrach es Doctor en biología molecular y explica el funcionamiento del cerebro. A través de ello, da consejos y herramientas para ser más creativos y felices en el trabajo y en la vida. La neurociencia es clara: el cerebro aprende hasta el último día de vida. La creatividad puede expandirse. Tu mente, mediante la aplicación de las técnicas correctas, puede […]
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  • EnCambio - Estanislao Bachrach November 17, 2017
    EnCambio te va a permitir alumbrar los procesos por los cuales te comportás de determinada manera con el fin de dejar atrás aquellos hábitos y conductas que ya no te sirven. El objetivo es que aprendas del potencial que tiene tu cerebro para cambiar y la capacidad que tenés vos para modificarlo. Este año cambio de trabajo, empiezo el gimnasio, bajo esos kili […]
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  • Breve historia de mi vida - Stephen Hawking November 17, 2017
    La mente maravillosa de Stephen Hawking ha deslumbrado al mundo entero revelando los misterios del universo. Ahora, por primera vez, el cosmólogo más brillante de nuestra era explora, con una mirada reveladora, su propia vida y evolución intelectual. Breve historia de mi vida cuenta el sorprendente viaje de Stephen Hawking desde su niñez […]
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  • Física General Esencial - Agustín Vázquez Sánchez November 17, 2017
    La nueva edición del ebook contiene ahora ocho temas completos de física y una sección de prácticas para realizar en casa. Se han corregido errores y agregado más ejemplos y ejercicios además de recursos multimedia en todos los capítulos.  Los ejemplos resueltos se presentan paso a paso a través de una solución algebraica con lo cual se evitan errores n […]
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New study shows that urban driving is way up, rural driving is way down

It really matches changes in the economy, and the stark changes in the rural/ urban divide. […]

Mexicans Launch Boycotts of U.S. Companies in Fury at Donald Trump

The digital image shows a clenched fist bathed in the red, white and green of Mexico’s flag and decorated with the nation’s emblematic eagle. “Consumers, to the Shout of War,” it says in Spanish above the fist. “Consume products made in country…Use your buying power to punish the companies that favor the politics of the new U.S. government.” #Opinión “¡Consumidores al grito de guerra!”, escribe Alejandro Calvillo de @elpoderdelc https://t.co/ozG6mcNP76 pic.twitter.com/ys0lWX9JZz — Sin Embargo (@SinEmbargoMX) January 25, 2017 Created by a Mexican food-activist group, the image is part of a slew of messages, memes and videos that have been spreading in Mexico in recent days as President Donald Trump pushes for a border wall, deportations and punishing new trade rules. Others messages call for specific boycotts of U.S. companies in Mexico, including McDonalds, Walmart and Coca-Cola. One of the most heavily trending hashtags is #AdiosStarbucks, or “Goodbye Starbucks,” referring to the Seattle company which has opened hundreds of coffee houses here. The boycotts illustrate the defiant mood brewing in Mexico in reaction to Trump’s tumultuous first week in the White House. President Enrique Pena Nieto canceled a bilateral meeting in Washington on Thursday after Trump insisted Mexico should pay for the border wall. The Mexican government and leading business lobbies have said the country should pull out of the North American Free Trade Agreement, or NAFTA, rather than accept a bad rewrite. And opposition leader Andres Manuel Lopez Obrador has called for a lawsuit in the United Nations against the planned border wall. If a trade war is brewing, it will not be fought on a level playing ground. Mexico has an economy that is only the tenth of the size of its northern neighbor and U.S. import tariffs and the deportation of millions of migrants could push it into recession. But however daunting the Trump White House is, Mexico looks like it won’t go down without a fight. “We need to stand up to Trump’s threats and his economic war,” says Enzzo Omar Sosa, part of a collective called Mexicanos Al Grito de Guerra, or “Mexicans to the Shout of War.” The group has social media accounts with hundreds of thousands of followers, in which it has been heralding the cries to boycott U.S. companies. “We need to support Mexican companies, which provide jobs and maintain our macro economy,” he said. Hitting U.S. companies could also make them pressure President Trump over his aggressive positions against Mexico, he said. It is as yet uncertain how much boycotts will affect the bottom line of U.S. businesses here, but they have gained prominence since Trump signed the executive order for the border wall on Wednesday. A shift manager at a Starbucks in the middle-class Roma neighborhood of Mexico City said Thursday he had already seen a slump of about 10 percent in customers at that particular outlet. “It’s bad because this is a franchise and it affects the jobs of Mexican workers,” said the manager, who asked his name not be used as he was not an authorized spokesman. Starbucks has not voiced any political support for Trump, and was itself the subject of a protest by Trump supporters in December. There have also been several demonstrations against Trump outside the U.S. embassy in Mexico City, where protesters have burned piñatas of the president. Protester Maria Garcia, of the Bi-National Coalition Against Trump, said the insistence that Mexico pays for the wall is the main contention. “They can build what they want in their territory. But pay for it themselves. The demand we pay for it is a weapon to beat us into submission. It is blackmail.” The White House has sent mixed messages on how it will actually get Mexico to foot the bill for a wall that could cost up to $15 billion. Press Secretary Sean Spicer on Thursday floated the idea of a 20% tax on Mexican imports, but then later said that was just “one idea.” During the campaign, Trump discussed a wall tax on the $25 billion in remittances sent home by Mexican migrants working in the United States every year. Either of those would, if enacted, have a catastrophic impact on Mexico’s economy. These positions and others have made Trump a despised figure in Mexico, with a poll in September finding fewer than 3% here had a positive opinion of him. Yet President Enrique Peña Nieto does not fare much better among his own people. A recent Reforma poll found his approval rating had plunged to 12 percent, the lowest among a Mexican president in recent history. Corruption scandals, violent crime and rising prices have all paid their toll on him. Diverting the anger to a foreign figure could provide Peña Nieto with some relief. But politics expert Maria Eugenia Valdez thinks he has failed to capitalize on it. “He has taken all the wrong steps. He should never have planned to meet Trump so early in his presidency. He is not offering a convincing leadership,” she said. Valdez thinks that the Mexico–U.S. relationship is likely headed for disaster, whatever people do. “NAFTA is already dead,” she said. “It is like a marriage is breaking up. But it is not going to be an easy divorce.” […]

How the Sharing Economy Screws American Workers

Fifty-one years ago, Bob Dylan’s song “Maggie’s Farm,” a brilliant satire that compared the job prospects of that generation’s youth to that of working on a dystopian plantation, was released on Dylan’s album “Bringing It All Back Home.” The owners, Maggie, her ma, pa and brother — a real close-knit unit, like a small “sharing economy” startup — were quite eager to put you to work, but they were a bit stingy on the compensation side for your menial, TaskRabbit-type work. Well, I wake in the morning Fold my hands and pray for rain I got a head full of ideas That are drivin’ me insane It’s a shame the way she makes me scrub the floor I ain’t gonna work on Maggie’s farm no more Dylan wrote that song in the 1960s, at a time when the plight of U.S. workers was actually on an upswing. Wages were rising, living standards were increasing, racial minorities and women were finally starting to find their seat at the table. For the next couple of decades, the U.S. workforce remained one of the most productive and wealthiest in the world. But flash forward to today, and the workforce has been enduring a long strange trip downward for nearly three decades. That’s how long it’s been since, in aggregate, American workers have had a pay increase. Even as corporate profits are at an all-time high, with significant chunks parked overseas to avoid being taxed, not much of the benefits of that labor productivity are being returned to domestic shores. U.S. workers are in the process of being rolled. Let’s call it “Shaggy’s Farm,” led by Maggie’s brother, Shaggy. I ain’t gonna work for Maggie’s brother no more No, I ain’t gonna work for Maggie’s brother no more Well, he hands you a nickel He hands you a dime He asks you with a grin If you’re havin’ a good time Then he fines you every time you slam the door I ain’t gonna work for Maggie’s brother no more A significant factor in the decline of the quality of jobs today has been many employers’ increasing reliance on “non-regular” employees — a growing army of contractors, freelancers, temps and part-timers. Meet Chris Young, an assembly line worker at Nissan’s manufacturing plant in Smyrna, Tenn. Young works alongside other Nissan employees, but he doesn’t work for Nissan. Rather, he works for a private contractor that provides a majority of Nissan’s workers. Young receives half the salary, less job security and fewer safety-net benefits than the regular Nissan employees. Nationwide, temps like Chris Young, who was profiled by the Washington Post, have provided nearly one-fifth of the job growth since the recession ended. And increasingly, the temps aren’t very temporary. Some have been employed at the same company for as long as 11 years, resulting in the doublespeak term “permatemps.” Microsoft paid $97 million to settle a lawsuit for denying benefits to over 8,000 permatemps. Instacart employees fulfill orders for delivery at the new Whole Foods in Los Angeles. (Patrick T. Fallon/Bloomberg via Getty Images) The advantage for a business of using such non-regular workers is obvious: It can lower labor costs dramatically, often by 30 percent, since it is not responsible for health benefits, social security, unemployment or injured workers’ compensation, paid sick or vacation leave and more. Contract workers, who are barred from forming unions and have no grievance procedure, can be dismissed without notice. A small percentage of contract workers earn high enough wages to make it all work. But most contractors are just grunts down on “Shaggy’s Farm.” Besides the explosion in the number of temporary jobs, nearly half of the new jobs created in the so-called “recovery” pay only a bit more than minimum wage. Three-fourths of Americans are living paycheck to paycheck, with little to no emergency savings to rely on if they lose their job. Income inequality is now as bad as it was in 1928, just before the Great Depression. Incredibly, the share of wealth held by the bottom 90 percent is no higher today than during our grandparents’ time. It’s as if the New Deal had never existed. The Latest Twist in the Race to the Bottom Where are the minstrels and poets to hold up society’s mirror? Why are no major or even emerging recording artists today writing such sharp, penetrating songs as “Maggie’s Farm”? If the corrosive reality of the traditional economy doesn’t inspire a Dylan-esque satire, maybe the latest “Twilight Zone” funhouse on “Shaggy’s Farm” will. A new and alarming mash-up of Silicon Valley technology and Wall Street greed is thrusting upon us the latest economic fad: the so-called “sharing economy.” Companies like Uber, Airbnb, Instacart, Upwork and TaskRabbit allegedly are “liberating workers” to become “independent” and the “CEOs of their own businesses.” In reality, these workers also are contractors, with little choice but to hire themselves out for ever-smaller jobs (“gigs” and “micro-gigs”) and wages, with no safety net while the companies profit. Uber at first seemed like a great idea to many. Taxi service was crummy nearly everywhere, so the industry was ripe for being disrupted. And with so many people struggling to find any kind of work, a lot of underemployed men jumped behind the wheels of their own vehicles to make a few extra bucks. Not only that, but with the new ride-sharing service, suddenly an American fantasy seemed to be coming true: everyone could have their own private chauffeur at the tap of an app. Rush hour traffic in Los Angeles. (Patrick T. Fallon/Bloomberg via Getty Images) But increasingly it’s clear that this huge increase in convenience comes with a price, both environmentally and labor-wise. The reason Uber and Lyft drivers arrive so rapidly is because these companies have flooded the streets with cars. In city after city, from New York to San Francisco to Seattle, already-thick traffic has gotten even more congested. In New York, transportation analyst Charles Komanoff looked at Uber’s own numbers and concluded that Uber-caused congestion has reduced traffic speeds in downtown Manhattan by around 8 percent. Incredibly, there are now far more ride-sharing cars operating in New York City than there are yellow taxis. Uber cars and those of its ride-sharing competitor Lyft also now vastly outnumber taxis in several American cities. Uber and Lyft have put an estimated 15,000 autos on the streets in San Francisco; Ed Reiskin, director of transportation for the Municipal Transportation Agency in San Francisco, says: “They’re all contributing to the increased traffic.” Ride-sharing defenders respond that increased congestion is being caused by an improving economy; undoubtedly there’s some truth to that. But I’ve lived in San Francisco for 20 years, and I’ve seen the city streets in both good times and bad. The number of cars — and increasingly desperate drivers — choking in traffic has never been so in your face. Urban cores cannot simply add thousands of additional cars to already crowded streets and not expect rather dramatic knock-on effects. Urban cores cannot simply add thousands of additional cars to already crowded streets and not expect rather dramatic knock-on effects. This is not only true today, it was also true in yesteryear: during the Great Depression, so many jobless men jumped into whatever vehicle they could find to provide rides-for-hire that soon local officials and media like the New York Times suggested regulation. Thus was born the much-reviled medallion system, which limited the number of taxis on the streets. It seems we have entered a back-to-the-future scenario. On the labor side, Uber drivers are not treated as employees but as freelance contractors. Most drivers, after they subtract their considerable driving expenses, don’t earn any more than taxi drivers. Many Uber drivers complain they don’t even earn minimum wage. They receive no benefits and can be cut off the app-based platform at any time. Recently Uber cut off hundreds of drivers (and possibly over a thousand) in Los Angeles and San Francisco because those drivers’ “acceptance rate” was too low. Many veteran drivers have figured out that, given the dramatic increase in congestion, drivers don’t make any money on short rides because they are stuck in traffic. They have begun refusing short rides, so Uber fired many of these drivers without warning. The message was clear: a low acceptance rate can get you fired. Think about it: if these drivers really are the CEOs of their own driving business, as Uber likes to claim, shouldn’t they be able to refuse a ride they know will cause them to lose money? This incident and others show that Uber exerts control over its drivers, which seems to support the legal claim by thousands of drivers who are suing Uber, insisting they are indeed employees, not contractors. As an employer, Uber would be responsible for paying Social Security and Medicare contributions for these workers, as well as unemployment and injured worker compensation. The drivers are also suing for reimbursement of expenses and for tips. New York City taxi drivers hold a rally in front of Governor Andrew Cuomo’s office to protest against Uber in Sept., 2015. (Spencer Platt/Getty Images) Welcome to “Shaggy’s Farm.” That’s why, according to Uber’s own numbers, most drivers work only part-time and about half leave within a year. New drivers like the flexibility, but after a while they burn out, with frequent wage cuts and unfair treatment (in early January, Uber slashed wages once again, this time by 30 percent to about 50 cents per mile, less than the $0.54 reimbursement rate set by the government for wear and tear on a vehicle — many drivers aren’t even earning enough to reimburse their vehicle’s depreciation). If driving for Uber was such a great job and paid halfway decently, wouldn’t more drivers last longer and drive more hours? Not surprisingly, many Uber drivers have called for forming a union, and recently pioneering legislation was passed in Seattle to allow NGOs to organize these drivers. Come Stay on Shaggy’s Farm’ — Courtesy of Airbnb Airbnb also started out as a good idea: helping “regular people” rent out a spare room in their home to make some extra money. But over the last two years Airbnb has morphed into something quite different: it has been invaded by professional real estate operatives who rent out multiple units, not just a spare bedroom. In many cities, Airbnb “hosts” control dozens of properties; in New York City some hosts have controlled over 200 properties. In San Francisco, Seattle, New York and elsewhere, 40 percent or more of hosts have multiple listings, according to data expert Tom Slee, author of “What’s Yours Is Mine: Against the Sharing Economy.” According to Slee’s analysis, almost half of Airbnb’s revenue in these cities comes from hosts with multiple listings. A leaked memo from Coldwell Banker Commercial shows the perverse profit incentives on “Shaggy’s Farm.” The memo broadcast to the real estate community that if their rental units are let out via Airbnb instead of to local residents, the projected rate of return is well over twice the profit they can take in from renting to tenants. Often the professionals evict longtime residents and convert entire buildings into Airbnb hotels, eating up the local housing stock. In cities with an already low housing vacancy rate, Airbnb’s thousands of listings in each city are devouring the few vacancies available. It is eating away the thin margin and making an existing housing crisis even more urgent. A protester outside an apartment building that allegedly evicted all of the tenants to convert the units to Airbnb rentals in San Francisco. (Justin Sullivan/Getty Images) “Shaggy’s Farm” is increasingly relying on these types of business operations as a core part of its model to maximize profits. It’s a big contributor to the ongoing race to the bottom. But fortunately there are solutions. One idea that I and others have proposed is creating a “portable safety net.” Each worker should be assigned an “individual security account” into which every business that hires that worker would pay a small “safety net fee,” prorated to the number of hours a worker is employed by that business. Those funds would be used to pay for each worker’s safety net. We don’t have to wait for a dysfunctional U.S. Congress to pass this “new new deal.” State governments and even city councils in the worst-hit cities could pass this, requiring its businesses to pay into individual security accounts for each worker. This would be a major step (out of the many needed) towards forging a new kind of deal, one in which most workers would be enriched by technology and innovation, instead of being disrupted and impoverished by this “share-the-crumbs” economy down on “Shaggy’s Farm.” Parts of this piece, which was adapted for The WorldPost, appear in the author’s recent book Raw Deal: How the “Uber Economy” and Runaway Capitalism Are Screwing American Workers. Earlier on WorldPost: — This feed and its contents are the property of The Huffington Post, and use is subject to our terms. It may be used for personal consumption, but may not be distributed on a website. […]

All-electric Chevy Bolt to be sold in all 50 US states, GM says

Not just a CARB compliance EV, after all. […]

All-electric Chevy Bolt to be sold in all 50 U.S. states, GM says

Not just a CARB compliance EV, after all. […]

4 Principles That Will Make You More Innovative

Combing through the research, what are the overarching principles that we need to know to be more innovative thinkers in everyday life? Here they are, with links to the research backing them up. 1) Relax What is most likely your daily creative peak? Your morning shower. For many of us it’s the most relaxing part of our day — and the most creative. Just being happy can make you more creative for days; seriously, just smile. Watching comedy clips helps, trying too hard hurts. If you tend to be hard on yourself, being less critical can make you more creative. Anger can boost originality in the short term — but it doesn’t last. It’s probably no surprise that boring work is better done at the office and creative work is better accomplished at home. Hopeful employees are more original. Trust can even make your hairstylist more creative. On the other hand, rudeness from superiors craters original thinking as does time pressure. Thoughts of money often bring pressure and the best art is created when there’s no cash involved. Being in nature relaxes us and even a mere potted plant in the office can increase creativity. Or just the color green for that matter. Sleep is good. Taking breaks aids your idea-generating. Daydreamers are more original thinkers. 2) Expose Yourself To New Ideas And New Perspectives Unusual or unexpected events increase creativity. A proven way to stimulate this effect is travel. Living in a foreign culture can make you more creative. Countries with more international business travelers patent more. Merely having friends from other cultures can get the muse going. Imagining you’re a child again or that you’re solving a problem for someone else was enough to increase creativity. Even frowning when you’re happy — creating dissonance between your mind and body spurred original thinking. Doing everyday things in unconventional ways can do the trick. Being exhausted or drunk increases creativity because they make you look at the world differently. Bilinguals are more creative, probably as a result of their dual perspective. Even sarcasm is enough of a perspective shift to help. 3) Get Ideas Crashing Into Each Other Overlapping different projects allows new connections to burgeon at the margins, helping to create innovative ideas. Bill Gates reads all his books for the year in two weeks because this allows new information to be better juxtaposed and contrasted. Just being curious offers a boost. A disorganized brain is often a more creative brain — and this may be why those with ADD and wandering minds are gifted idea generators. Larger cities are disproportionately innovative as are people with bigger networks. You want a mix of fresh and classic. The most creative teams are a mix of old friends and new blood as well as experienced and inexperienced workers. The most creative ideas are fresh but also fit into a recognized formula. Originality requires both freedom and constraints. Make little bets and iterate, iterate, iterate. And brainstorming’s mantra of refraining from judging or negating ideas is wrong. Let ideas duke it out. 4) Work Hard As Chuck Close said, “Inspiration is for amateurs.” You don’t need fancy degrees to be a creative genius. Some of the most brilliant artists of all time had the equivalent of a college-dropout level of education — but you do need to work hard at your craft. Studying your field extensively doesn’t reduce creativity, it increases it. Future geniuses are often unpopular in high school because they spend so much time working on their projects. Chris Rock relentlessly tests and tweaks new comedy acts onstage over a period of months to get them right. “Some historical studies of patent records have in fact shown that overall productivity correlates with radical breakthroughs in science and technology, that sheer quantity ultimately leads to quality.” Artists are more likely to have mood disorders. What’s the connection? Depression makes you obsess about things — which is a benefit when you’re trying to make breakthroughs. Dwelling on your problems makes you more creative. The most original thinkers work very hard and know the secrets to becoming an expert. Literally being forced to write made writers more productive and more creative. Sum Up Four principles: Relax Expose Yourself To New Ideas And New Perspectives Get Ideas Crashing Into Each Other Work Hard Challenge yourself to use them today. 🙂 This piece originally appeared on Barking Up the Wrong Tree. Join over 190,000 readers. Get a free weekly update via email here. Related posts: How To Stop Being Lazy And Get More Done – 5 Expert Tips How To Get People To Like You: 7 Ways From An FBI Behavior Expert New Harvard Research Reveals A Fun Way To Be More Successful […]

Jamaica Beats U.S. 2-1 in Gold Cup Semifinals

(ATLANTA) — Jamaica stunned the United States with a pair of first-half goals, one off a blunder by goalkeeper Brad Guzan, and held on for a 2-1 victory in the Gold Cup semifinals Wednesday night that dealt the Americans their biggest upset defeat. Darren Mattocks, who plays for Vancouver in Major League Soccer, put the Reggae Boyz ahead with 31st-minute header directly off a throw-in. Giles Barnes followed five minutes later with a goal on an 18-yard free kick after Guzan was caught going outside the penalty area on a routine throw. Michael Bradley scored in the 48th minute for the Americans, but it wasn’t enough to prevent a stunning setback in front of sold-out crowd at the Georgia Dome. The small contingent of green-and-gold-clad Jamaican fans saluted their underdog team, ranked 76th in the world but now becoming the first Caribbean nation to reach a Gold Cup final. The Reggae Boyz face Mexico or Panama on Sunday in Philadelphia. The 34th-ranked Americans, who had played in five straight Gold Cup finals, will face the loser of Wednesday’s second semifinal in the third-place game on Saturday. They also will meet the Gold Cup winner in a playoff for the region’s berth in the 2017 Confederations Cup. It marked the first time the U.S. was eliminated by a CONCACAF team en route to the Gold Cup final. In the era when teams outside the region were invited guests, the Americans lost semifinals to Brazil in 1996 and 2003, and a quarterfinal to Colombia in 2000. In the early going, it looked as though the Americans might romp to another impressive win after a 6-0 blowout of Cuba in the quarterfinals. They had most of the chances but kept sending good looks wide or over the net against Jamaican goalkeeper Ryan Thompson, who plays for the Pittsburgh Riverhounds in the third-tier United Soccer League. Suddenly, Jamaica jumped ahead. Kemar Lawrence got everything on a long throw-in, delivering it perfectly into the box. Mattocks, with his back to the goal and sandwiched between defenders Ventura Alvarado and John Brooks, leaped up for a dazzling header that caught the underside of the crossbar, out of a leaping Guzan’s reach, and dropped beyond the goal line. Guzan had taken a step off his line and scrambled back for the ball, but it was too late. He slammed it in disgust as the Jamaicans celebrated. The U.S. goalkeeper was really steaming minutes later, when his huge blunder set up Jamaica for a commanding lead. On a routine throw downfield from the edge of the penalty area, Guzan’s right arm went over the line when he let go of the ball. That gave the Jamaica a dangerous free kick and Barnes hooked a shot over the defensive wall and into the right side of net, while Guzan was covering the opposite side. After the goal, Guzan screamed at the linesman who made the call, but the replay showed it was the proper one. The Americans fought back early in the second half. Aron Johannsson ripped a shot that was smothered by Thompson, but he couldn’t hang on to the ball. Dempsey tried unsuccessfully to poke it under the sprawled-out keeper, and Bradley swooped in on the third whack for the goal that sent the sell-out Georgia Dome crowd of some 68,000 into a frenzy. Bradley nearly evened it in the 57th, when his shot one-hopped off Thompson’s chest, caught the near post and deflected away. The Americans had a number of good chances the rest of the way, but none that came close. […]