News tagged with comet theory
Charcoal evidence tracks climate changes in Younger Dryas
Space & Earth / Earth Sciences
Jan 28, 2009 |
4.4 / 5 (7) |
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A new study reports that charcoal particles left by wildfires in sediments of 35 North American lake beds don't readily support the theory that comets exploding over the continent 12,900 years ago sparked ...
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More precise measurements of the W boson
6 hours ago |
4 / 5 (7) |
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(PhysOrg.com) -- "The W boson is one of the very few major building blocks of matter," Dmitri Denisov tells PhysOrg.com. "It is a member of a family of particles that is the most fundamental in nature. The W boson is res ...
Researcher explains mystery of golden ratio
13 hours ago |
2.5 / 5 (15) |
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The Egyptians supposedly used it to guide the construction the Pyramids. The architecture of ancient Athens is thought to have been based on it. Fictional Harvard symbologist Robert Langdon tried to unravel ...
From terrorism to HIV, it's all about the network
Other Sciences / Social Sciences
Dec 18, 2009 |
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(PhysOrg.com) -- Similarities between webs of terrorists and networks of rescue personnel may seem unlikely. To an eclectic collaboration of engineers and social scientists, the connections are not only possible, but a potential ...
Hot Electrons Could Double Solar Cell Power Efficiency
Dec 18, 2009 |
4.2 / 5 (12) |
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Scientists have experimentally verified a theory suggesting that hot electrons could double the output of solar cells. The researchers, from Boston College, have built solar cells that successfully use hot ...
Physicists detect two candidate dark matter interactions, but say the data are not conclusive
Dec 18, 2009 |
4.1 / 5 (16) |
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(PhysOrg.com) -- Scientists have spent decades searching for the elusive material known as dark matter, which is believed to make up 25 percent of the universe. On Thursday, Dec. 17, a team of physicists including ...
Researcher studies the universe through quantum electrodynamics
Dec 17, 2009 |
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(PhysOrg.com) -- Fundamental constants, such as the standards for length and mass, are a given in our society. However, research has shown that these constants might be changing slightly with the expansion of the universe.
Researchers revise long-held theory of fruit-fly development
Dec 17, 2009 |
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For decades, science texts have told a simple and straightforward story about a particular protein—a transcription factor—that helps the embryo of the fruit fly, Drosophila melanogaster, pattern tissues in a m ...
Negative emotions outweigh intent to exercise at health clubs
Dec 17, 2009 |
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Time and time again, it has been documented that regular exercise has many health benefits including lowering risks associated with the comorbidities of obesity. With only 30% of Americans trying to lose weight meeting the ...
Genetic variant may control lung function and risk of COPD
Dec 17, 2009 |
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Researchers have discovered evidence that suggests a genetic variant may be associated with better preserved lung function among children with asthma and adults who smoke, according to a new study funded by the National Heart, ...
Facebook mines Census data to track its diversifying users
Dec 17, 2009 |
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In its earliest days, Facebook was primarily a white and Asian phenomenon. No more. In the first-ever study of the race and ethnicity of its U.S. users, Facebook said Wednesday that blacks and Latinos have joined the social ...
List of search results for comet theory
