Daily non-political popular news in brief.
Chicken of the Sea: Poultry may have reached Americas via Polynesia
06-09-2007 · Science News OnlinePolynesians may have traveled back and forth to South America more than 600 years ago, introducing chickens to the Americas in the process.
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Keywords: chicken, sea, poultry, reached, americas, via, polynesia, america
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- Northwest Passage: Americas populated via Alaska, genetics show
12-01-2007 · Science News Online
A single population of prehistoric Siberians crossed the Bering Strait into Alaska and fanned out to North and South America, a new genetic analysis of living Native Americans suggests.
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- A Plan For Reintroducing Megafauna To North America
10-02-2006 · ScienceDaily
Dozens of megafauna (large animals over 100 pounds) -- such as giant tortoises, horses, elephants and cheetah -- went extinct in North America 13,000 years ago during the end of the Pleistocene. As is the case today in Africa and Asia, these megafauna likely played keystone ecological roles via predation, herbivory and other processes. What are the consequences of losing such important components of America's natural heritage?
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- Earth from Space: Yucatan Peninsula
01-07-2008 · European Space Agency (ESA)
This Envisat image shows the northern part of Mexico's Yucatan Peninsula, a northeastern projection of Central America that is located between the Gulf of Mexico to the west and the Caribbean Sea to the east.
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- The discovery of America: The revolutionary claims of a dead historian
04-04-2007 · EurekAlert!
History tells us Columbus discovered America in 1492 and, five years later, John Cabot reached the mainland of North America before Columbus could claim South America for Spain. What if new evidence was unearthed to suggest that while Columbus was still exploring the Caribbean, Cabot had claimed the whole of North America for England and, at the same time, established its first Christian church?
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- Why a Rocky Mountain high?
06-24-2007 · EurekAlert!
A University of Utah study shows how various regions of North America are kept afloat by heat within Earth's rocky crust, and how much of the continent would sink beneath sea level if not for heat that makes rock buoyant. Of coastal cities, New York City would sit 1,427 feet under the Atlantic, Boston would be 1,823 feet deep, Miami would reside 2,410 feet undersea and Los Angeles would rest 3,756 feet beneath the Pacific.
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- Arctic sea ice minimum shatters all-time record low, report University of Colorado scientists
09-20-2007 · EurekAlert!
Scientists from the University of Colorado at Boulder's National Snow and Ice Data Center said today that the extent of Arctic sea ice appears to have reached its minimum for 2007 on Sept. 16, shattering all previous lows since satellite record-keeping began nearly 30 years ago.
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- What are the causes and consequences of childhood obesity?
01-14-2008 · EurekAlert!
Childhood obesity in America has reached near epidemic proportions, with recent studies showing a tripling of the number of overweight children since the 1970s. Over 9 million children are now considered overweight or obese. How did that happen and what should be done now?
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- Gene study supports single main migration across Bering Strait
11-26-2007 · EurekAlert!
A new analysis of genetic variation among more than two dozen native populations bolsters the theory that the ancestors of modern native peoples across the Americas came via a northwest land bridge some 12,000 years ago.
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- New World Stopover: People may have entered the Americas in stages
02-16-2008 · Science News Online
People first reached the edge of the Americas about 40,000 years ago but had to stay put for at least 20,000 years before melting ice sheets allowed them to move south and settle the rest of the continent.
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- New cause identified for necrotic enteritis in chicken
02-07-2008 · EurekAlert!
Researchers from Monash University and CSIRO Livestock Industries have demonstrated for the first time that alpha-toxin protein, long thought to be required for necrotic enteritis to develop, is not the main cause of the chicken disease. The study, published Feb. 8 in the open-access journal PLoS Pathogens, provides insight into one of the world's most common and financially crippling poultry diseases.
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