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Diverse populations make rational collective decisions

Wed, 17/05/2017 - 1:06pm
Yes/no binary decisions by individual ants can lead to a rational decision as a collective when the individuals have differing preferences to the subject, according to new research.
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Young people troubled by romantic relationships, sexual harassment

Wed, 17/05/2017 - 1:06pm
A new report finds that young people struggle with romantic relationships and rampant misogyny and sexual harassment, but parents and other adults have commonly failed to address these problems.
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Regular coral larvae supply from neighboring reefs helps degraded reefs recover

Wed, 17/05/2017 - 1:06pm
For reefs facing huge challenges, more coral larvae doesn't necessarily translate to increased rates of coral recovery on degraded reefs, a new study has showed.
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Young women's gradual weight gain lifts pregnancy blood pressure danger

Wed, 17/05/2017 - 1:06pm
Researchers are challenging women to start thinking about pre-pregnancy health sooner, with the finding that years of gradual weight gain more than doubles the risk of hypertensive disorders in pregnancy. The increased risk was due to weight change and occurred regardless of whether the woman's body mass index (BMI) was initially categorized as healthy or overweight.
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Time flies: Insect fossils in amber shed light on India's geological history

Wed, 17/05/2017 - 1:06pm
Researchers have identified three new species of insects encased in Cambay amber dating from over 54 million years ago. Researchers describe the new species of fungus gnats, which provide further clues to understanding India's past diversity and geological history.
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Chemists create the ultimate natural sunscreen

Wed, 17/05/2017 - 1:06pm
Chemists, materials scientists and nanoengineers have created what may be the ultimate natural sunscreen. They report the development of nanoparticles that mimic the behavior of natural melanosomes, melanin-producing cell structures that protect our skin, eyes and other tissues from the harmful effects of ultraviolet radiation.
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Study sheds light on link between diseases like Alzheimer's and normal aging in the brain

Wed, 17/05/2017 - 1:05pm
Neurodegenerative diseases are often associated with protein aggregates, highly intractable clumps of protein. Experiments on roundworms and mouse brain extracts yielded evidence that these disease-associated aggregates can be directly induced by proteins that aggregate together during normal aging. The present study therefore opens up a new area of preventative research targeting these age-dependent protein aggregates as possible therapeutic targets.
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During heat waves, urban trees can increase ground-level ozone

Wed, 17/05/2017 - 1:05pm
Planting trees is a popular strategy to help make cities 'greener,' both literally and figuratively. But scientists have found a counterintuitive effect of urban vegetation: during heat waves, it can increase air pollution levels and the formation of ozone.
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Microbial fuel cell converts methane to electricity

Wed, 17/05/2017 - 1:05pm
Transporting methane from gas wellheads to market provides multiple opportunities for this greenhouse gas to leak into the atmosphere. Now, an international team of researchers has taken the first step in converting methane directly to electricity using bacteria, in a way that could be done near the drilling sites.
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Analysis examines safety of antidepressant use during pregnancy

Wed, 17/05/2017 - 1:05pm
Use of fluoxetine -- the most commonly prescribed antidepressant -- during pregnancy is linked with a slightly increased risk of malformations in infants, according to a recent analysis.
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Tool may help determine older adults' history of sports concussions

Wed, 17/05/2017 - 1:05pm
A new study in retired athletes takes the first steps in developing an objective tool for diagnosing a history of sports concussions.
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New test to rapidly diagnose sepsis

Wed, 17/05/2017 - 1:05pm
Researchers have developed a test that can rapidly and reliably diagnose sepsis, a potentially life-threatening complication of bacterial infections.
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How herbicide use and climate affect monarch butterflies

Wed, 17/05/2017 - 1:05pm
An analysis of data in Illinois has found a link between higher county-level use of an herbicide called glyphosate and reduced abundance of adult monarch butterflies, especially in areas with concentrated agriculture. This association was only evident during the initial years of the adoption of herbicide-resistant crops (1994-2003), however, when glyphosate use was increasing most quickly.
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How have European freshwater fish species changed over time?

Wed, 17/05/2017 - 1:05pm
Over time, humans have contributed to the loss of native species and have introduced non-native species throughout Europe. A new analysis shows how European freshwater fish have changed profoundly since 1840. At the continental scale, the contemporary fauna holds net 11 more species today as exotic species introduction (26 species) exceeded native species loss (15 species). But the biggest change was made by European species introduced from one area in Europe to another (77 species), often with fatal results.
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Secrets behind T. rex's bone crushing bites: T. rex could crush with 8,000 pound bite forces

Wed, 17/05/2017 - 1:05pm
The giant Tyrannosaurus rex pulverized bones by biting down with forces equaling the weight of three small cars while simultaneously generating world record tooth pressures, according to a new study.
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New study describes how surface texture can help or hinder formation of ice crystals

Wed, 17/05/2017 - 1:05pm
A new study examining how ice forms from pure water found that the geometry of the surface that water is on can have an effect on whether or not it freezes, suggesting that surface geometry plays an important role in ice formation.
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Study confirms benefits of fennel in reducing postmenopause symptoms

Wed, 17/05/2017 - 1:05pm
Fennel, an anise-flavored herb used for cooking, has long been known for its health benefits for a variety of issues, including digestion and premenstrual symptoms. A new study confirms that it is also effective in the management of postmenopause symptoms such as hot flashes, sleeplessness, vaginal dryness, and anxiety, without serious side effects.
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Cross-species links identified for osteoarthritis

Wed, 17/05/2017 - 1:05pm
New research has identified 'cell messages' that could help identify the early stages of osteoarthritis.
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Dams are major driver of global environmental change

Wed, 17/05/2017 - 1:05pm
Water reservoirs created by damming rivers could have significant impacts on the world's carbon cycle and climate system that aren't being accounted for, a new study concludes.
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Polymerases pause to help mediate the flow of genetic information

Wed, 17/05/2017 - 1:05pm
Stop-and-go traffic is typically a source of frustration, an unneccesary hold-up on the path from point A to point B. But when it comes to the molecular machinery that copies our DNA into RNA, a stop right at the beginning of the path may actually be helpful. Recent research shows that this stop prevents another machine from immediately following the first, presumably to better control the traffic and avoid later collisions.
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