Posts tagged France
CU Boulder – Neanderthals Not Inferior To Modern Humans
May 1st
The widely held notion that Neanderthals were dimwitted and that their inferior intelligence allowed them to be driven to extinction by the much brighter ancestors of modern humans is not supported by scientific evidence, according to a researcher at the University of Colorado Boulder.
Neanderthals thrived in a large swath of Europe and Asia between about 350,000 and 40,000 years ago. They disappeared after our ancestors, a group referred to as “anatomically modern humans,” crossed into Europe from Africa.
In the past, some researchers have tried to explain the demise of the Neanderthals by suggesting that the newcomers were superior to Neanderthals in key ways, including their ability to hunt, communicate, innovate and adapt to different environments.
But in an extensive review of recent Neanderthal research, CU-Boulder researcher Paola Villa and co-author Wil Roebroeks, an archaeologist at Leiden University in the Netherlands, make the case that the available evidence does not support the opinion that Neanderthals were less advanced than anatomically modern humans. Their paper was published today in the journal PLOS ONE.
Villa and Roebroeks scrutinized nearly a dozen common explanations for Neanderthal extinction that rely largely on the notion that the Neanderthals were inferior to anatomically modern humans. These include the hypotheses that Neanderthals did not use complex, symbolic communication; that they were less efficient hunters who had inferior weapons; and that they had a narrow diet that put them at a competitive disadvantage to anatomically modern humans, who ate a broad range of things.
The researchers found that none of the hypotheses were supported by the available research. For example, evidence from multiple archaeological sites in Europe suggests that Neanderthals hunted as a group, using the landscape to aid them.
Researchers have shown that Neanderthals likely herded hundreds of bison to their death by steering them into a sinkhole in southwestern France. At another site used by Neanderthals, this one in the Channel Islands, fossilized remains of 18 mammoths and five woolly rhinoceroses were discovered at the base of a deep ravine. These findings imply that Neanderthals could plan ahead, communicate as a group and make efficient use of their surroundings, the authors said.
Other archaeological evidence unearthed at Neanderthal sites provides reason to believe that Neanderthals did in fact have a diverse diet. Microfossils found in Neanderthal teeth and food remains left behind at cooking sites indicate that they may have eaten wild peas, acorns, pistachios, grass seeds, wild olives, pine nuts and date palms depending on what was locally available.
Additionally, researchers have found ochre, a kind of earth pigment, at sites inhabited by Neanderthals, which may have been used for body painting. Ornaments have also been collected at Neanderthal sites. Taken together, these findings suggest that Neanderthals had cultural rituals and symbolic communication.
Source: CU Boulder
Nobel Prize-winner David Wineland praised as mentor to CU-Boulder graduate students
Oct 9th
Wineland is a physicist with the National Institute of Standards and Technology in Boulder and internationally recognized for developing the technique of using lasers to cool ions to near absolute zero. His experiments have been used to test theories in quantum physics and may lead to the development of quantum computers. He shared the prize with Serge Haroche of France.
Wineland joined the CU-Boulder physics faculty as a lecturer in 2000 and currently works with four CU-Boulder graduate students pursuing doctorates, said physics department chair Paul Beale.
“It would be difficult to find a more brilliant and humble scientist,” said John Jost, who worked in Wineland’s group for about 10 years as a CU-Boulder doctoral student and postdoctoral researcher. “I feel lucky to have worked in his lab for my Ph.D. regardless of whether or not he won the Nobel Prize. He was always available when we had questions and problems in the lab and usually had some great idea about what to try next. At the same time, he gave us the freedom to figure things out on our own.”
In August, Jost began a Marie Curie fellowship as a postdoctoral researcher in the École Polytechnique Fédérale de Lausanne in Lausanne, Switzerland.
Wineland’s first demonstration of laser cooling in 1978 led many other scientists to pursue the laser cooling and trapping of atoms. His research helped make possible the creation of the world’s first Bose-Einstein condensate, for which Carl Wieman of CU and JILA and Eric Cornell of NIST and JILA and CU were awarded the Nobel Prize in physics in 2001. JILA is a joint institute of CU-Boulder and NIST.
Five CU-Boulder faculty members have now won individual Nobel Prizes. The other two winners are Tom Cech in chemistry and John “Jan” Hall in physics.
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