background preloader


Facebook Twitter


15 cambios que nos hicieron humanos - BBC Mundo. Científicos afirman que Dios produjo el Big Bang | CREACION/EVOLUCION. La ciencia y la religión han mantenido un antiguo debate casi interminable sobre la creación del universo, pero esta semana el conflicto entre el creacionismo y el Big Bang, podría haber ganado un importante capítulo. El Profesor Nathan Aviezer, de la Universidad Bar Ilan de Israel, dijo que la ciencia y religión puede vivir juntas y en armonía. Tras el lanzamiento de su libro “En el principio” [In the Beginning], dijo que los científicos están buscando desde hace décadas las ondas producidas por la gravedad, pero esto ha sido una hazaña difícil.

Después de todo, la gravedad es un billón de billones de veces más débil que las fuerzas eléctricas que también producen ondas. Sin embargo, el argumenta que “si había un enorme cambio gravitacional, entonces tal vez con algún equipo más sensible, usted podría detectarlas”. Para él, el Big Bang, causó este cambio “así que no hay esperanza de que tal vez usted pudiese ver las ondas causadas por el Big Bang”. El profesor Aviezri S.

Early Spanish Hunter-Gatherer Was Dark and Blue-Eyed. The first whole human genome from the bones of a southern European who lived before farming shows he was blue eyed, dark skinned, lactose intolerant and well equipped to fight diseases. The discoveries about the 7,000-year-old Mesolithic ancestral European suggest the young man represents a transition that was still underway to create the lighter-skinned, milk-drinking people of more recent millenniums. The genome of what's called the La Braña individual appears to have already acquired immunities to diseases that were thought to have been introduced to humans later, at the time when Europeans domesticated animals, which are thought to have transmitted the diseases to humans.

The results were a surprise to the researchers who fully expected the man would have lighter skin and a more ancient set of immunity alleles, or groups of genes. Milk Drinking Still a Mystery Other researchers agree that the precocious immunity of the La Braña individual is especially intriguing. El vicio de fumar, ¿es culpa del hombre de Neandertal? - BBC Mundo - Noticias.

La vida en la Tierra vino de Marte, argumentan los científicos | CREACION/EVOLUCION. La reconocida Conferencia Internacional de Goldschmidt para Geoquímicos, en Florencia, Italia, atrajo la atención por lo inusual que fue. Entre las diversas presentaciones, se destacó la de Steve Benner, del Instituto Westheimer de Ciencia y Tecnología, EE.UU. Él defiende que la vida en la Tierra vino de Marte, ya que se comprobó que existía agua, el planeta rojo tiene todas las condiciones para que exista la vida. Más concretamente, las “semillas de la vida” tendrían que haber llegado a nuestro planeta a través de meteoritos generadas por fuertes impactos o erupciones volcánicas en la superficie de nuestro planeta vecino. Otros expertos en la materia están de acuerdo con él. “La evidencia parece estar creciendo más fuerte que en realidad todos somos marcianos. La razón para esta teoría sería una forma del elemento químico oxidado molibdeno mineral, que ayudó a prevenir que las moléculas de carbono – la base de la vida – se degradasen.

Traducido y adaptado por Euro News y Ciencia Online. Mice can inherit learned sensitivity to a smell. 2-Dec-2013 [ Print | E-mail ] Share [ Close Window ] Contact: Quinn 404-727-7829Emory Health Sciences Trauma can scar people so indelibly that their children are affected. History provides examples of generations traumatized by war and starvation, whose children experience altered physiology. Now researchers at Yerkes National Primate Research Center, Emory University have found an instance of animals passing on more specific information about a traumatic experience to their offspring.

That information comes not through social communication, but through inheritance. Researchers have found that when a mouse learns to become afraid of a certain odor, his or her pups will be more sensitive to that odor, even though the pups have never encountered it. The results were published online Dec. 1, 2013 in Nature Neuroscience. Ressler is a Howard Hughes Medical Institute-supported investigator at Yerkes National Primate Research Center, Emory University. . [ Print | E-mail. Por qué las primeras huellas del Big Bang son un hito extraordinario - BBC Mundo - Noticias. Rock around the clock: zircon crystal is oldest piece of Earth. WASHINGTON — To put it mildly, this is one gem of a gem. Scientists using two different age-determining techniques have shown that a tiny zircon crystal found on a sheep ranch in western Australia is the oldest known piece of our planet, dating to 4.4 billion years ago.

Writing in the journal Nature Geoscience on Sunday, the researchers said the discovery indicates that Earth's crust formed relatively soon after the planet formed and that the little gem was a remnant of it. John Valley, a University of Wisconsin geoscience professor who led the research, said the findings suggest that the early Earth was not as harsh a place as many scientists have thought. To determine the age of the zircon fragment, the scientists first used a widely accepted dating technique based on determining the radioactive decay of uranium to lead in a mineral sample. "One of the things that we're really interested in is: when did the Earth first become habitable for life? "Zircons can be large and very pretty. Schimpansen können fremde Sprache lernen - SPIEGEL ONLINE. Je nach Leckerei, die sie entdecken, stoßen Schimpansen unterschiedliche Laute aus. Bislang gingen Forscher davon aus, dass der Klang der Rufe vom Geschmack der Affen abhängt: Je begeisterter und aufgeregter ein Schimpanse von einem Nahrungsmittel ist, desto schriller der Schrei.

Nun aber zeigt sich, dass die Primaten gezielt kommunizieren und sogar fremde Affensprachen lernen können. Neue Lautsprache nach Umzug Zwischen 2010 und 2013 haben Katie Slocombe von der University of York und Kollegen die Apfel-Rufe von 13 Schimpansen im Zoo von Edinburgh untersucht. Sieben von ihnen waren zuvor aus einem Safari-Park in den Niederlanden nach Schottland gezogen. Bevor die Affenbanden zusammengelegt wurden, stießen die Schimpansen aus den Niederlanden schrille Laute aus, wenn sie Äpfel entdeckten. Die Affen aus Edinburgh gaben tiefere Grunzer von sich. Nach drei Jahren Zusammenleben sah das deutlich anders aus. Ohne Integration keine neue Sprache Der Autorin auf Twitter folgen News verfolgen. The truth about Darwin and God. Thus, whatever “Darwinism” is, this is not a book about Darwinism. Nor is it a book about contemporary evolutionary theory or the “new synthesis” or the “extended synthesis.” It is rather a book about “chance” in Darwin’s writing.

To that extent it must confront “Darwinism” more broadly, even in its recent and contemporary incarnations, if only to situate the problems it deals with in a proper context. But an answer to “what is Darwinism” is surprisingly elusive. Even if we grant that “Darwinism is whatever Darwin said it is,” the problems of identifying Darwinism only begin there. Darwin’s views seem to have evolved over the course of a long and prolific career as a scientist, author, and correspondent. To mention only the most notorious example, the Origin of Species, from its first appearance in 1859 through the last edition (sixth, 1872) underwent revisions, many of decided significance, for each new edition. In the case of Darwin such evidence is hard to come by. Darwinism.