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Researchers Eliminate HIV From Cultured Human Cells

July 22, 2014 | by Temple Univ. | News | Comments

The HIV-1 virus has proved to be tenacious, inserting its genome permanently into its victims' DNA, forcing patients to take a lifelong drug regimen to control the virus and prevent a fresh attack. Now, a team of researchers has designed a way to snip out the integrated HIV-1 genes for good.

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Refuges to Phase Out Nicotine-like Pesticide

July 22, 2014 8:01 am | by Jeff Barnard, Associated Press | News | Comments

Federal wildlife refuges in the Northwest and Hawaii will phase out a class of pesticides that are chemically similar to nicotine because they pose a threat to bees and other pollinators key to crop growth.                     

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Global Warming ‘Pause’ Reflects Natural Fluctuation

July 22, 2014 7:00 am | by McGill Univ. | News | Comments

Statistical analysis of average global temperatures between 1998 and 2013 shows that the slowdown in global warming during this period is consistent with natural variations in temperature. A natural cooling fluctuation during this period largely masked the warming effects of a continued increase in man-made emissions of carbon dioxide and other greenhouse gases. 

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Mammoths, Mastodons Were Not Nomadic

July 22, 2014 7:00 am | by Univ. of Cincinnati | News | Comments

Research shows ancient mammoths and mastodons enjoyed the now-Greater Cincinnati area so much they likely were year-round residents and not nomadic migrants as previously thought. Findings indicate each species kept to separate areas based on availability of favored foods at the southern edge of the Last Glacial Maximum's major ice sheet. 

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Technique Maps Life's Effects on Our DNA

July 22, 2014 7:00 am | by Biotechnology and Biological Sciences Research Council | News | Comments

Researchers have developed a powerful new single-cell technique to help investigate how the environment affects our development and the traits we inherit from our parents. The technique can be used to map all of the epigenetic marks on the DNA within a single cell.            

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New 'Simulated' Human Heart Screens Drugs

July 22, 2014 7:00 am | by Coventry Univ. | News | Comments

A scientist has developed a pioneering new way – using samples of beating heart tissue – to test the effect of drugs on the heart without using human or animal trials.                                                

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New Flu Drugs Target Immune Response, Not Virus

July 22, 2014 7:00 am | by American Society for Microbiology | News | Comments

The seriousness of disease often results from the strength of immune response, rather than with the virus, itself. Turning down that response, rather than attacking the virus, might be a better way to reduce that severity.                         

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Missing Sleep Can Hurt Your Memory

July 22, 2014 7:00 am | by Michigan State Univ. | News | Comments

Lack of sleep, already considered a public health epidemic, can also lead to errors in memory. A study found participants deprived of a night’s sleep were more likely to flub the details of a simulated burglary they were shown in a series of images.                          

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Bad Diet Linked to Loss of Smell

July 22, 2014 7:00 am | by Florida State Univ. | News | Comments

Could stuffing yourself full of high-fat foods cause you to lose your sense of smell? A new study says so, and it has researchers taking a closer look at how our diets could impact a whole range of human functions that were not traditionally considered when examining the impact of obesity.

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Gold Nanoparticles Take Neuron Route to Deliver Drugs

July 22, 2014 7:00 am | by MIT, Anne Trafton | Videos | Comments

A special class of tiny gold particles can easily slip through cell membranes, making them good candidates to deliver drugs directly to target cells. A new study reveals that these nanoparticles enter cells by taking advantage of a route normally used in vesicle-vesicle fusion, a crucial process that allows signal transmission between neurons.

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Plants Impacted by Size, Age More than Climate

July 21, 2014 3:02 pm | by Univ. of Arizona | News | Comments

The size and age of plants has more of an impact on their productivity than temperature and precipitation. Researchers combined a new mathematical theory with data from more than 1,000 forests across the world to show that climate has a relatively minor direct effect on net primary productivity, or the amount of biomass that plants produce by harvesting sunlight, water and carbon dioxide.

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Material Converts Solar Energy into Steam

July 21, 2014 2:49 pm | by MIT, Jennifer Chu | News | Comments

A new material structure generates steam by soaking up the sun. The structure — a layer of graphite flakes and an underlying carbon foam — is a porous, insulating material structure that floats on water.When sunlight hits the structure’s surface, it creates a hotspot in the graphite, drawing water up through the material’s pores, where it evaporates as steam. 

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Researchers Find Epigenetic Tie to Neuropsychiatric Disorders

July 21, 2014 2:44 pm | by Univ. of California, Irvine | News | Comments

Dysfunction in dopamine signaling profoundly changes the activity level of about 2,000 genes in the brain’s prefrontal cortex and may be an underlying cause of certain complex neuropsychiatric disorders, such as schizophrenia, according to new research.                  

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Found: Exoplanet with Longest Known Year

July 21, 2014 2:38 pm | by Harvard-Smithsonian Center for Astrophysics | News | Comments

Astronomers have discovered a transiting exoplanet with the longest known year. Kepler-421b circles its star once every 704 days. In comparison, Mars orbits our Sun once every 780 days. Most of the 1,800-plus exoplanets discovered to date are much closer to their stars and have much shorter orbital periods.

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Scientists Can ID 'Worst' HIV Particles

July 21, 2014 2:35 pm | by Univ. of Michigan | News | Comments

HIV-infected people carry many different HIV viruses and all have distinct personalities—some much more vengeful and infectious than others. Yet, despite the breadth of infectivity, roughly 76 percent of HIV infections arise from a single virus. Now, scientists believe they can identify the culprit with very specific measurements of the quantities of a key protein in the HIV virus.

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Parents Rank Their Obese Children as 'Very Healthy'

July 21, 2014 2:25 pm | by Univ. of California, San Diego | News | Comments

A new study suggests parents of obese children often do not recognize the potentially serious health consequences of childhood weight gain or the importance of daily physical activity in helping their child reach a healthy weight.                      

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