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  • Sobre la teoría de la relatividad especial y general - Albert Einstein August 18, 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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  • La teoría del todo - Stephen W. Hawking August 18, 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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  • Física General Esencial - Agustín Vázquez Sánchez August 18, 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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  • Tricks Any Dog Can Do! - Susan Day August 18, 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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  • La física del futuro - Michio Kaku August 18, 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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  • Ágilmente - Estanislao Bachrach August 18, 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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  • El gran diseño - Stephen Hawking & Leonard Mlodinow August 18, 2017
    Aun antes de aparecer, este libro ha venido precedido, en todos los medios de comunicación, de una extraordinaria polémica sobre  sus conclusiones: que tanto nuestro universo como los otros muchos universos posibles surgieron de la nada, porque su creación no requiere de la intervención de ningún Dios o ser sobrenatural, sino que todos los universos pro […]
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  • Breve historia de mi vida - Stephen Hawking August 18, 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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  • Una mochila para el universo - Elsa Punset August 18, 2017
    ¿Cuánto debe durar un abrazo? ¿De qué sirve llorar? ¿Qué podemos hacer para cambiar nuestra suerte? ¿Tiene algún propósito el enamoramiento? ¿Y por qué es tan inevitable el desamor? ¿Cómo aprendemosa tener miedo? ¿A partir de qué edad empezamos a mentir? ¿Por qué sentimos envidia? ¿Cuántos amigos necesitamos para ser felices? ¿Podemos evitar estresarnos sin […]
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  • ¿Cómo pensar como Sherlock Holmes? - Maria Konnikova August 18, 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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Trump ‘Sad’ Over Removal of ‘Our Beautiful Statues’

On Saturday, the day of the protests, Mr. Trump did not condemn neo-Nazis or white supremacists in his public remarks about the violence, prompting criticism that his omission suggested support for the racist groups. An Ohio man with white supremacist ties is accused of driving his car into a crowd, killing one woman and injuring 19 other people.Continue reading the main storyTwo days later, Mr. Trump bowed to pressure and said racism was “evil” and named racist organizations in his follow-up remarks about Charlottesville. But on Tuesday, Mr. […]

Trump Lawyer Forwards Email Echoing Secessionist Rhetoric

His words were widely criticized in Washington but were praised by white supremacists, including a former Ku Klux Klan leader.Mr. Dowd received the email on Tuesday night and forwarded it on Wednesday morning to more than two dozen recipients, including a senior official at the Department of Homeland Security, The Wall Street Journal editorial page and journalists at Fox News and The Washington Times. There is no evidence that any of the journalists used the contents of the email in their coverage. One of the recipients provided a copy to The New York Times.PhotoA portion of the email that John Dowd, President Trump’s personal lawyer, forwarded to conservative journalists, government officials and friends.“You’re sticking your nose in my personal email?” Mr. Dowd told The Times in a brief telephone interview […]

News Analysis: Trump Refuses to Set a Moral Standard, Abandoning a Traditional Duty

“There are a lot of killers,” Mr. Trump said to Bill O’Reilly on Fox News early this year when he was asked about his reluctance to condemn the Russian leader. “You think our country’s so innocent?”Continue reading the main storyIn fact, Mr. Trump’s predecessors, going back to George Washington, have all tried, with varying degrees of success, to summon Americans to a higher moral purpose.Abraham Lincoln, in his second inaugural address, called on Americans, bitter after years of civil war, to bind up their wounds “with malice toward none; with charity for all; with firmness in the right.”PhotoFranklin D. Roosevelt said the presidency was primarily a place for moral leadership.Credit Keystone Features, via Getty ImagesTheodore Roosevelt spoke from a bully pulpit about the need to shield the vulnerable from the predations of industry. Woodrow Wilson prayed that World War I would be the war to end all wars. Franklin D. […]

Full Transcript and Video: Trump’s News Conference in New York

Just blocks away is the Empire State Building. It took 11 months to build the Empire State Building. But today it can take as long as a decade, and much more than that. Many, many stories where it takes 20 and 25 years just to get approvals to start construction of a fairly routine highway. Highway builders must get up to 16 different approvals involving nine different federal agencies governed by 29 different statutes. One agency alone can stall a project for many, many years and even decades. Not only does this cost our economy billions of dollars, but it also denies our citizens the safe and modern infrastructure they deserve.This overregulated permitting process is a massive, self-inflicted wound on our country […]

Theories Abound Over Meaning of Trump’s ‘Many Sides’ Remark

“They think there were 300 or so racists who showed up to a rally, and who got exactly what they wanted: Violence, and violence in a way that inspires the nation’s elite to double down on iconoclasm in a way they hope grows their movement,” said Ben Domenech, the publisher of The Federalist, an online magazine.A headline on The Federalist on Monday summed up that sentiment: “White Supremacists Were Not the Only Thugs Tearing Up Charlottesville.”A site called The Patriot Post created a meme on Monday called “They Lie” using two juxtaposed photographs. The first was a man looking at Mr. Trump waving to a sea of cheering fans; the second was a picture of that same man wearing glasses covered in the CNN logo, but seeing instead a group of Hitler Youth saluting their leader.Townhall.com offered another provocative take: “How the Liberal Media Created Charlottesville.”Mr. […]

South Korea Says U.S. Promises Coordination in Standoff With North

figure.prepend(style); }); }); South Korea’s emphasis on transparency on Friday followed a series of statements opposing an armed conflict with the North. Although most South Koreans loathe the repressive regime in the North and its nuclear pursuit, they also are afraid that the South has more to lose in a war than the impoverished North, a fear that the regime of Kim Jong-un, the North’s leader, has been using as leverage. After Mr. Moon talked with Mr. Trump on the phone on Monday, his office said he emphasized that “South Korea can never accept a war erupting again on the Korean Peninsula.” On Thursday, his office said the escalation of military tensions or an armed clash would “not help any country.” Leaders of Mr […]

North Korea’s Potential Targets: Guam, South Korea and Japan

Photo Students learning to use gas masks at a training center next to the War Memorial of Korea in Seoul in April. Credit Lam Yik Fei for The New York Times A Potential Attack on South Korea The conventional wisdom holds that any North Korean retaliation would target American Air Force and military bases in South Korean towns like Kunsan and Osan, as well as major ports in the South to hamper and delay the arrival of American military reinforcements. Seoul itself lies within range of North Korean artillery and rockets that are deployed in large numbers along the border. Continue reading the main story The North Korean military warned on Wednesday that it would “burn up all the objects” in border regions of the South, including Seoul, “the moment the U.S. reckless attempt at pre-emptive attack is spotted” and that “the whole of the southern half” of Korea would be its target. But North Korea has a multitude of options, especially ones in which its enemies would not quickly be able to trace the origin, like cyber attacks, analysts said. It could also, for example, seize Japanese, South Korean and American citizens and hold them hostage, using them as a leverage to drive a wedge between Washington and its allies, especially should Mr. […]