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Differential Selection According To The Degree Of Cheating In A Status Signal

A badge of status is arbitrary morphological markings of animals, which evolved to avoid unnecessary fights. The maintenance of honesty in a badge-of-status system is not fully understood, despite many studies. Our experiment examined the relationship between badge size and winter survival, and the long-term costs of cheating, by manipulating badge size in male house sparrows.

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13.08.2008 16:00:00 - Health News from Medical News Today

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Avian Migrants Adjust Migration In Response To Environmental Conditions En Route

Climate change is driving a rapid change in breeding area arrival for long-distance migrants. However, little is known about the climatic factors affecting migratory birds during the migration cycle.

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13.08.2008 16:00:00 - Health News from Medical News Today

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'Divisive Social Issues' Could Draw Attention From Presidential Candidates, New York Times Reports

"Divisive social issues" set to be on the ballot in several states in November -- including antiabortion-related measures in California, Colorado and South Dakota and a measure to loosen stem cell research restrictions in Michigan -- have begun attracting the attention of presidential candidates Sens. John McCain (R-Ariz.) and Barack Obama (D-Ill.

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13.08.2008 15:00:00 - Health News from Medical News Today

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HHS Secretary Leavitt To Visit HIV/AIDS Projects In Cote D'Ivoire

HHS Secretary Mike Leavitt on Wednesday is scheduled to arrive in Cote d'Ivoire, where he will visit projects aimed at fighting HIV/AIDS, malaria and other diseases, AFP/Google.com reports. Leavitt will spend two days in the country, which receives funding from the President's Emergency Plan for AIDS Relief.

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13.08.2008 15:00:00 - Health News from Medical News Today

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Kaiser Daily Health Policy Report Feature Highlights Recent Blog Entries

While mainstream news coverage is still a primary source of information for the latest in policy debates and the health care marketplace, online blogs have become a significant part of the media landscape, often presenting new perspectives on policy issues and drawing attention to under-reported topics.

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13.08.2008 15:00:00 - Health News from Medical News Today

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Employers' Health Care Cost Growth Expected To Slow Next Year; Report Estimates Growth At 10.6%

Health care costs are expected to increase by 10.6% into next year, the smallest increase in six years, according to a report by Aon Consulting Worldwide, the AP/Baltimore Sun reports. For the report, study director Bill Sharon, a senior vice president at Aon, and colleagues surveyed about 70 U.S.

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13.08.2008 15:00:00 - Health News from Medical News Today

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Immune Activation Suppresses Plasma Testosterone Level; A Meta-Analysis

Males of many species attract females with sexual displays and ornaments. What causes some males to signal at lower rates than others? Signaling intensity is under the influence of testosterone, and we show that activation of the immune system result in lower testosterone levels. Thus males that have more infections have lower testosterone, and hence signal at a lower rate.

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13.08.2008 15:00:00 - Health News from Medical News Today

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Diversity Increases Biomass Production For Trematode Parasites In Snails

At first glance, 1A + 1B > 1A, might appear to be self-evident. But this is a contested premise behind a potential value of biodiversity -e.g., whether multi-species assemblages produce more biomass than do single-species assemblages. We extend diversity versus production research by examining assemblages of parasitic castrator worms.

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13.08.2008 15:00:00 - Health News from Medical News Today

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Abortion Rights Debate 'Shifting' To Procedure's Possible Mental Effects, Wall Street Journal Reports

The "cultural battle" over abortion is "shifting" to the possible mental health effects of the procedure, the Wall Street Journal reports. According to the Journal, the American Psychological Association this week at an annual conference in Boston is expected to release a comprehensive report reviewing 20 years of published research on the mental health effects of abortion.

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13.08.2008 14:00:00 - Health News from Medical News Today

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Washington Post Examines Treatment Of MSM, WSW In Mexico, Latin America, Ability To Access HIV Treatment, Seek Asylum In U.S.

Asylum applicants, U.S. lawyers and Hispanic advocates say it has become increasingly difficult for men who have sex with men and women who have sex with women from Mexico and other Latin American countries to obtain asylum in the U.S. because of the countries' improved treatment of homosexuality, liberalized laws and expanded HIV/AIDS treatment, according to the Washington Post.

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13.08.2008 14:00:00 - Health News from Medical News Today

Health News from Medical News Today

Differential Selection According To The Degree Of Cheating In A Status Signal

Avian Migrants Adjust Migration In Response To Environmental Conditions En Route

'Divisive Social Issues' Could Draw Attention From Presidential Candidates, New York Times Reports

HHS Secretary Leavitt To Visit HIV/AIDS Projects In Cote D'Ivoire

Kaiser Daily Health Policy Report Feature Highlights Recent Blog Entries

Employers' Health Care Cost Growth Expected To Slow Next Year; Report Estimates Growth At 10.6%

Immune Activation Suppresses Plasma Testosterone Level; A Meta-Analysis

Diversity Increases Biomass Production For Trematode Parasites In Snails

Abortion Rights Debate 'Shifting' To Procedure's Possible Mental Effects, Wall Street Journal Reports

Washington Post Examines Treatment Of MSM, WSW In Mexico, Latin America, Ability To Access HIV Treatment, Seek Asylum In U.S.

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