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Selección Natural

Selección Natural

http://www.youtube.com/watch?v=Cz6VTtlQksE

Related:  Humanitat

Mouse click reveals ancient coastline › News in Science (ABC Science) News in Science Wednesday, 3 October 2007 Anna SallehABC The changing shape of Australasia can now be seen in a new interactive digital map that mimics the rise and fall of sea levels over the past 100,000 years. Charles Darwin, el padre de la evolución elmundo.es Charles Darwin, considerado como el padre de la evolución, murió hace 200 años. Repase con elmundo.es su vida, su obra, el viaje en el Beagle, las claves de su teoría e incluso la relación entre Ciencia y Religión. | Ciencia - elmundo.es © 2009 Unidad Editorial Internet S.L. » elmundo.es Coordinación: Sonia Aparicio y Pablo Jáuregui » Diseño: Eduardo Salvo Contáctenos

Monash University: Sahul Time: Explore Global Navigation Global Utilities <! David Le Breton:“pensar el cuerpo es pensar el mundo” David Le Breton es doctor en Sociología de la Universidad París VII y miembro del Instituto Universitario de Francia. Profesor en la Facultad de Ciencias Sociales de la Universidad de Ciencias Humanas Marc Bloch de Estrasburgo, ha escrito innumerables artículos y colaboraciones, y más de 20 libros (traducidos a los más diversos idiomas), en relación a la temática del cuerpo humano y su construcción social y cultural. Algunas de sus obras han sido traducidas al español: Antropología del Cuerpo y Modernidad; La Sociología del Cuerpo; Antropología del Dolor; El Silencio; Las Pasiones Ordinarias. Antropología de las Emociones y Adiós al Cuerpo.

L'homme de Yamashita-cho. Un homme fossile du Pléistocène de l'île d'Okinawa (en anglais) Bull, et Mém. de la Soc. d'Anthrop. de Paris, t. 10, série XIII, 1983, p. 81-87. THE YAMASHITA-CHO MAN. A late Pleistocene infantile skeleton from the Yamashita-cho Cave (Okinawa) by H. Suzuki (*) The possible connection of the Nansei Islands of Japan with the Asian continent in the Quaternary period was actually proved by the discovery of fossilized bones of extinct mammals such as deer and Naumann's elephant on two islands of the Ryukyu chain : Okinawa Honto (Nohara and Hasegawa, 1973) and Miyako Islands (Otuka, 1941).

The Origin of Us Who are we? Where did we come from? Why are we here? The age-old question of our origin has been baffling mankind for centuries. For most of our history, it was widely accepted that man had been created by an omnipresent, omnipotent, God or Gods. Most ancient texts such as the Bible, Torah and The Sumerian tablets seemed to all contain similar stories of such beings. La genètica de les migracions humanes - Revista Mètode L’estudi d’aquestes variants genètiques del nostre genoma ha demostrat que les poblacions africanes actuals presenten més variants i, per tant, més diversitat genètica que la resta de poblacions humanes. A més, gran part de la diversitat en poblacions no africanes és un subconjunt de les variants que trobem al continent africà. Aquests resultats abonen l’anomenada teoria de la sortida d’Àfrica (Out-of-Africa), protagonitzada pels humans, que representa la primera gran migració. Aquesta teoria afirma que l’origen de la nostra espècie se situaria en algun punt del continent africà fa uns 200.000 anys i que després d’un període de diversificació, d’acumulació de mutacions en aquestes poblacions, una part d’aquesta diversitat va migrar fora del continent i va colonitzar la resta del planeta.

Map of Human Migration When humans first ventured out of Africa some 60,000 years ago, they left genetic footprints still visible today. By mapping the appearance and frequency of genetic markers in modern peoples, we create a picture of when and where ancient humans moved around the world. These great migrations eventually led the descendants of a small group of Africans to occupy even the farthest reaches of the Earth. Our species is an African one: Africa is where we first evolved, and where we have spent the majority of our time on Earth. Migratory Crossings Out of Africa For the human journey to really get into its stride, our species had to leave the warm embrace of mother Africa. Researchers identify the Bab-el-Mandeb Strait on the Red Sea as the most likely departure point.

Climate Swings Drove Early Humans Out of Africa (and Back Again) - SAPIENS The textbook narrative of human history tells us that between 70,000 and 60,000 years ago our earliest modern human ancestors traveled out of Africa on a journey that led them to nearby continents. But the factors that drove this mass exodus—as well as when it occurred and whether there was more than one big migration event—have long been points of spirited debate and contention. In a study published today in Nature, researchers report that dramatic climate fluctuations created favorable environmental conditions that triggered periodic waves of human migration out of Africa every 20,000 years or so, beginning just over 100,000 years ago. These findings push back the clock on the earliest known arrivals of humans in Europe by tens of thousands of years and provide important clues about what drew early humans out of Africa and into Eurasia and beyond.

Out of Africa I - Wikipedia This article is about early humans. For migrations of modern humans, see Out of Africa II. In palaeoanthropology, Out of Africa I is the first series of hominin expansions into Eurasia, which took place from 1.8 to 0.8 million years ago (Ma).

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