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Showing posts from November 29, 2016

New HIV Vaccine Study Starts in South Africa

A new HIV vaccine is now being tested in South Africa in a study that aims to enroll several thousand people, officials announced today. The study is the first in seven years to test the effectiveness of a vaccine against HIV, said the National Institutes of Health (NIH), which is funding the study. "If deployed alongside our current armory of proven HIV-prevention tools, a safe and effective vaccine could be the final nail in the coffin for HIV," Dr. Anthony Fauci, director of the NIH's National Institute of Allergy and Infectious Diseases, said in a statement.


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Good Cognition in Older Women Linked to Pregnancy History

Women who have their last baby when they are older than age 35 may have sharper cognitive skills later in life than those who finished with their pregnancies at a younger age, a new study suggests. Researchers found that the women in the study who had their last baby when they were older than 35 were better at memorizing lists of words at age 60, compared with those who stopped bearing children earlier on. "The study provides strong evidence that there is a positive association between later age at last pregnancy and late-life cognition," lead study author Dr. Roksana Karim, an assistant professor of clinical preventive medicine at the University of Southern California, said in a statement.


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How to Talk to Kids About Divorce

Research shows that children may experience a range of behavioral changes as a result of their parents' divorce, the authors of the report said. Because that last factor — the parents' own functioning — affects children's ability to cope with their parents' divorce, parents should make sure they can cope with their own emotions related to the separationin order to be able to offer stronger support to their children, said Dr. Carol C. Weitzman, a co-author of the report and a professor of pediatrics at Yale School of Medicine.


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New Pyramid in Antarctica? Not Quite, Say Geologists

But Occam's razor — the idea that the simplest explanation is usually the right one — points to a far more mundane cause: Those steep, pyramid-like sides are likely the work of hundreds of millions of years of erosion, experts told Live Science. "This is just a mountain that looks like a pyramid," Eric Rignot, a professor of Earth system science at the University of California, Irvine, told Live Science in an email. The pyramidal mountain, which doesn't have a formal name, is one of the many peaks that make up Antarctica's Ellsworth Mountains, which were discovered by the American aviator Lincoln Ellsworth during a flight on Nov. 23, 1935, according to a 2007 research paper that was published by the U.S. Geological Survey (USGS).


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Surprise! Life Thrives Under Ice-Covered Lakes

In winter, an icy freshwater lake can appear frozen in time. But frozen freshwater lake ecosystems don't take a winter break after all. In fact, cyclical winter activity of tiny aquatic organisms, like zooplankton and photosynthesizing algae, could play critical roles in the lake ecosystems' overall health, infusing the water with nutrients to fuel other organisms' spring and summer growth.


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