Western Expansion during the nineteenth century was an important determinant of geographic distribution and economic activity in the United States today. However, while explanations abound for why the migration occurred– ...
Other
Feb 28, 2008
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In order for a rare, massive star to form inside an interstellar cloud of gas and dust, small "helper" stars about the size of the sun must first set the stage, according to a new theory proposed by astrophysicists at the ...
Astronomy
Feb 28, 2008
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Scientists at the California Institute of Technology have developed a new strategy for creating "liquid metal" that makes it able to bend significantly without breaking, while retaining a strength twice that of titanium. ...
Condensed Matter
Feb 28, 2008
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Cars are becoming more complex, with a range of advanced features we could hardly have imagined a few years ago made possible by sophisticated software-driven electronics. The downside is, with more to go wrong, more is going ...
Engineering
Feb 28, 2008
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Honey bees and hummingbirds can hover like helicopters for minutes at a time, sucking the juice from their favorite blossoms while staying aloft in a swirl of vortices.
Feb 28, 2008
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Brent Christner, LSU professor of biological sciences, in partnership with colleagues in Montana and France, recently found evidence that rain-making bacteria are widely distributed in the atmosphere. These biological particles ...
Feb 28, 2008
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Each year, long-distance winds drop up to 900 million tons of dust from deserts and other parts of the land into the oceans. Scientists suspect this phenomenon connects to global climate—but exactly how, remains a question. ...
Earth Sciences
Feb 28, 2008
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Interstellar space may be strewn with tiny whiskers of carbon, dimming the light of far-away objects. This discovery by scientists at the Carnegie Institution may have implications for the “dark energy” hypothesis, proposed ...
Astronomy
Feb 28, 2008
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Scientists at the John Innes Centre in Norwich have discovered how roots find their way past obstacles to grow through soil. The discovery, described in the forthcoming edition of Science, also explains how germinating seedlings ...
Feb 28, 2008
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A trio of NASA and ESA spacecraft orbiting Mars are preparing for the 25 May arrival of NASA's Phoenix lander. ESA's Mars Express has already started adjusting its orbit to provide critical back-up monitoring of Phoenix.
Space Exploration
Feb 28, 2008
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