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	<title>Beyeaynetou</title>
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		<title>Evolution</title>
		<link>http://samrawt.wordpress.com/2009/10/02/evolution/</link>
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		<pubDate>Fri, 02 Oct 2009 09:41:13 +0000</pubDate>
		<dc:creator>sam</dc:creator>
				<category><![CDATA[I&#039;ll sleep smarter]]></category>

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		<description><![CDATA[Chimps and Us...<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=samrawt.wordpress.com&amp;blog=9279164&amp;post=14&amp;subd=samrawt&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>18:47 01Oct09 RTRS-Discovery in Ethiopia casts light on human origins<br />
* &#8220;Ardi&#8221; lived 4.4 million years ago in Africa<br />
* Discovery illuminates human evolution, predates &#8220;Lucy&#8221;</p>
<p>By Maggie Fox, Health and Science Editor<br />
WASHINGTON, Oct 1 (Reuters) &#8211; The skeleton of an early human who lived 4.4 million years ago shows that humans did not evolve from chimpanzee-like ancestors, researchers reported on Thursday.<br />
Instead, the missing link &#8212; the common ancestor of both humans and modern apes &#8212; was different from both, and apes have evolved just as much as humans have from that common ancestor, they said.<br />
The researchers stressed that &#8220;Ardi&#8221; may now be the oldest known hominid, but she was not the missing link. &#8220;At 4.4 million years ago we found something pretty close to it,&#8221; said Tim White of the University of California Berkeley, who helped lead the research team.<br />
They described the partial skeleton of a female representative of Ardipithecus ramidus. The hominid species lived 4.4 million years ago in what is now Ethiopia.<br />
The 4-foot (1.2 meter) tall creature is a million years older than &#8220;Lucy&#8221; &#8212; the skeleton of another species called Australopithecus afarensis that is one of the best-known pre-humans.<br />
Genetics suggest that humans and our closest living relatives, the chimpanzees, diverged 6 million to 7 million years ago, although some research suggests this may have happened 4 million years ago.<br />
&#8220;Ardi&#8221; is clearly a human ancestor and her descendants did not grow up to be chimpanzees or other apes, the researchers report in the journal Science.<br />
She had an ape-like head and opposable toes that allowed her to climb trees easily, but her hands, wrists and pelvis show she strode like a modern human and did not knuckle-walk like a chimp or a gorilla.<br />
&#8220;People have sort of assumed that modern chimpanzees haven&#8217;t evolved very much, that the last common ancestor was more or less like a chimpanzee and that it&#8217;s been &#8230; the human lineage &#8230; that&#8217;s done all the evolving,&#8221; White said.<br />
But &#8220;Ardi&#8221; is &#8220;even more primitive than a chimpanzee,&#8221; White said.<br />
So chimps and gorillas do not knuckle-walk because they are more primitive than humans &#8212; they have evolved this characteristic that helps them live in their forest homes.<br />
White, Berhane Asfaw of Rift Valley Research Service in Addis Ababa and a large team analyzed all the bones of Ardi and found she might have been more peace-loving than modern chimpanzees. She does not have the long, sharp canines that chimps use to fight, for instance.<br />
And males and females have similar-sized teeth, suggesting more equality than seen among modern apes.<br />
But her brain, while small, is positioned in a way more similar to that of Australopithecus and modern humans, suggesting more human-like visual and spatial perception. (Editing by David Morgan) ((<a style="color:#1c51a8;" href="mailto:Maggie.Fox@ThomsonReuters.com" target="_blank">Maggie.Fox@ThomsonReuters.com</a>; Washington bureau newsroom 202-898-8492)) Keywords: HUMAN EARLY/</p>
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			<media:title type="html">Sam</media:title>
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		<title>Les igNobels 2009</title>
		<link>http://samrawt.wordpress.com/2009/10/02/les-ignobels-2009/</link>
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		<pubDate>Fri, 02 Oct 2009 09:35:51 +0000</pubDate>
		<dc:creator>sam</dc:creator>
				<category><![CDATA[Say What?!/Quoi ?!]]></category>

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		<description><![CDATA[Des ingénieurs ayant mis au point un soutien-gorge qui se transforme en masque à gaz, la banque centrale du Zimbabwe et les banquiers islandais figurent en bonne place au palmarès des prix IgNobel 2009, parodie des prix Nobel qui seront annoncés à partir de la semaine prochaine<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=samrawt.wordpress.com&amp;blog=9279164&amp;post=12&amp;subd=samrawt&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>11:06 02Oct09 RTRS-Banques islandaises et soutien-gorge masque à gaz à l&#8217;honneur     par Maggie Fox     WASHINGTON, 2 octobre (Reuters) -</p>
<p>Des ingénieurs ayant mis au point un soutien-gorge qui se transforme en masque à gaz, la banque centrale du Zimbabwe et les banquiers islandais figurent en bonne place au palmarès des prix IgNobel 2009, parodie des prix Nobel qui seront annoncés à partir de la semaine prochaine.     Le Zimbabwe est couronné pour avoir, au plus fort de l&#8217;hyperinflation, mis en circulation une gamme de billets de banque allant d&#8217;un centime à 100.000 milliards de dollars zimbabwéens.     Les comités de direction, les cadres supérieurs et les auditeurs des banques islandaises qui se sont spectaculairement effrondrées il y a un an ont également eu les honneurs de la cérémonie de remise des IgNobel, obtenant jeudi soir le prix d&#8217;Economie.     Les dirigeants de la Kaupthing Bank, de la Landsbanki, de la Glitnir Bank et de la Banque centrale islandaise entrent dans la lumière &#8220;pour avoir démontré que des petites banques peuvent être rapidement transformées en banques gigantesques, et vice versa&#8221;.     Ces prix à la saine ironie sont remis par les Annales des recherches improbables, une revue éditée à Harvard qui épluche les études scientifiques les plus décalées et les plus étonnantes, et soutenus par plusieurs associations rattachées elles aussi à Harvard.     Le prix de la Santé publique est allé à Elena Bodnar et ses collègues de Hinsdale, Illinois, qui ont mis au point et breveté un soutien-gorge qui peut rapidement se transformer et fournir deux masques à gaz.     Le prix de Littérature revient à la police irlandaise, qui a verbalisé par erreur et à plus de cinquante reprises un homme répondant du nom de Prawo Jazdy &#8211; &#8220;permis de conduire&#8221; en polonais.     L&#8217;étude de Stephan Bolliger et de ses collègues de l&#8217;université de Berne, en Suisse, n&#8217;est pas passée inaperçue: il s&#8217;agissait de déterminer qui d&#8217;une bouteille vide ou pleine était susceptible de provoquer le plus de dégâts au crâne lors d&#8217;une rixe dans un bar.     Conclusion: &#8220;Les deux suffisent à briser le crâne humain. Cependant, les bouteilles vides sont plus robustes&#8221;, a dit Stephan Bolliger. Explication: une bouteille renfermant de la bière explose plus facilement du fait de la pression exercée par le liquide.     Donald Unger a reçu lui un prix honorifique pour l&#8217;ensemble de son oeuvre. Cela fait plus de 60 ans que ce Californien s&#8217;astreint à faire craquer quotidiennement les jointures de sa main gauche, uniquement la gauche, pour démontrer que cette pratique ne provoque pas l&#8217;arthrite. (version française Henri-Pierre André) ((Service Informations générales. Tel 01 49 49 53 34. paris.newsroom@reuters.com. Reuters Messaging : henri-pierre.andre.reuters.com@reuters.net))</p>
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