Yawns Are Contagious

Vie, abr 22, 2011

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Christie Nicholson www.scientificamerican.com/…/episode.cfm?…yawns-are-contagious… [Los bostezos son contagiosos Científicos han encontrado que quienes demuestran empatía fácilmente y de manera frecuente tienen más tendencia a bostezar cuando otra persona lo hace.]   [Yawn sound.] Oh sorry. Well, now that I’ve yawned, you might be yawning, too. Right? Studies have linked contagious yawning in humans to our capacity for empathy. In fact, scientists have found that those who exhibit empathy easily and often also do more yawning because someone else yawned. If contagious yawning is indeed a sign of empathy, then we should probably do it more with friends and acquaintances. Because we have an empathetic connection with them that we don’t have with strangers. An[...] 

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When Will Japan’s Aftershocks Stop?

Vie, abr 22, 2011

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When Will Japan’s Aftershocks Stop?

Katherine Harmon www.scientificamerican.com/article.cfm?id=japan… [¿Cuándo cesarán las réplicas del terremoto en Japón? El comportamiento de las réplicas es totalmente normal. Según las estadísticas ocurre un terremoto de una magnitud menor al principal y diez que son de dos unidades menos.] Aftershocks—larger than any quake to hit the mainland U.S. in years—continue to rattle a beleaguered Japan. Thursday’s magnitude 7.1 earthquake was among the largest so far, but experts had not immediately reported major additional damage, and a tsunami warning, issued shortly after the 11:32 P.M. local time quake, was called off within two hours.* The island nation is frequently rocked by tremors, owing to its location on the seismically active Pacific Ring of Fire. But the March[...] 

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Huge natural stone arch discovered in Afghanistan

Vie, abr 22, 2011

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Huge natural stone arch discovered in Afghanistan

www.scientificamerican.com/gallery_directory.cfm?…id… [En las zonas montañosas de Afganistán se ha descubierto uno de los arcos de piedra natural más grandes del mundo: 64 m de ancho y 18 m de altura.]   One of the world’s largest natural stone arches has been discovered in the central highlands of Afghanistan. Wildlife Conservation Society staff were tracking the area for wildlife when they chanced on this natural bridge in late 2010. They measured it in February and found that it’s 64 meters wide and more than 18 meters tall. It now ranks as the 12th largest natural bridge in the world, usurping Outlaw Arch in Utah’s Dinosaur Natural Monument. Researchers named the feature Hazarchishma Natural Bridge after a nearby village. The arch includes rock[...] 

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Are you smarter than a middle schooler?

Vie, abr 22, 2011

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Katherine Harmon www.scientificamerican.com/…/post.cfm?…are-you–smarter–than-a-middle… [¿Eres más listo que un alumno de intermedio? Un nuevo sitio en red ayuda a mejorar la lectura de datos y de hechos científicos.] Pop quiz: True or false? • The different cell types found in a given individual’s body contain different DNA. • Mountains form by the piling up of pieces of rock. • Some living parts of organisms are not made of cells. More than half of the thousands of middle and high school students tested in nationwide examinations think the above statements are true (58 percent, 52 percent and 75 percent, respectively). They are not. Also false: Earth’s plates are under the surface and are not visible (49 percent of students think is true);[...] 

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How Self-Control Works

Vie, abr 22, 2011

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Dan Ariely www.scientificamerican.com/article.cfm?…how-self-control-works [El autocontrol es una destreza que modela profundamente nuestras vidas. ¿Cómo funciona? ¿De dónde proviene?] The scientific community is increasingly coming to realize how central self-control is to many important life outcomes. We have always known about the impact of socioeconomic status and IQ, but these are factors that are highly resistant to interventions. In contrast, self-control may be something that we can tap into to make sweeping improvements life outcomes. If you think about the environment we live in, you will notice how it is essentially designed to challenge every grain of our self-control. Businesses have the means and motivation to get us to do things NOW, not later. Krispy Kreme wants[...] 

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Limita Francia los tratamientos estéticos.

Vie, abr 22, 2011

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www.lanacion.com.ar/1367344-cont-limita-francia-las-terapias-esteticas-no-invasivas – Una diposición del gobierno francés prohibió la utilización de numerosas técnicas estéticas no invasivas por considerarlas peligrosas para la salud.   El que viva en Francia y quiera hacerse un tratamiento contra la celulitis, bajar los rollos abdominales o eliminar la grasa localizada en cualquier lugar del cuerpo, indefectiblemente deberá pasar por el quirófano. Una disposición del gobierno francés prohibió la utilización de numerosas técnicas estéticas no invasivas por considerarlas peligrosas para la salud. Pero si la opción es evitar la cirugía, se deberá buscar esos tratamientos en otros países, como la Argentina, donde no sólo no están prohibidos, sino que su demanda[...] 

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Job Creation and Carbon Dioxide Regulation

Vie, abr 22, 2011

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Job Creation and Carbon Dioxide Regulation

David Kreutzer, Ph.D. www.heritage.org/…/job–creation-and-carbon–dioxide–regulation [La creación de fuentes de trabajo y la reglamentación del dióxido de carbono El limitar la posibilidad de elección no hace que la vida sea más fácil o que se reduzcan los costos ni para los consumidores ni para las empresas. Cualquier reducción impuesta a las emisiones de CO2 reduciría el acceso a la energía, los ingresos y el crecimeinto.] Testimony before the Subcommittee on Regulatory Affairs, Stimulus Oversight, and Government Spending of the Committee on Oversight and Government Reform United States House of Representatives April 6, 2011 My name is David Kreutzer. I am Research Fellow in Energy Economics and Climate Change at The Heritage Foundation. The views I express[...] 

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