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Friday, November 21, 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News

Spooky alignment of quasars across billions of light-years

Posted: 19 Nov 2014 05:45 AM PST

New observations with ESO's Very Large Telescope (VLT) in Chile have revealed alignments over the largest structures ever discovered in the Universe. A European research team has found that the rotation axes of the central supermassive black holes in a sample of quasars are parallel to each other over distances of billions of light-years. The team has also found that the rotation axes of these quasars tend to be aligned with the vast structures in the cosmic web in which they reside.

Scientists prevent memory problems caused by sleep deprivation

Posted: 18 Nov 2014 03:24 PM PST

Scientists have found that a particular set of cells in a small region of the brain are responsible for memory problems after sleep loss. By selectively increasing levels of a signaling molecule in these cells, the researchers prevented mice from having memory deficits.

Shift in gut bacteria observed in fiber supplement study may offer good news for weight loss

Posted: 18 Nov 2014 09:55 AM PST

Most Americans don't get the daily recommended amount of fiber in their diet, though research has shown that dietary fiber can cause a shift in the gut toward beneficial bacteria, reducing the risk of colon cancer, type 2 diabetes, and other diseases. A new study shows that two specific functional fibers may also have the potential to assist in weight loss when made part of a long-term, daily diet.

Mother's soothing presence makes pain go away, changes gene activity in infant brain

Posted: 18 Nov 2014 09:54 AM PST

A mother's 'TLC' not only can help soothe pain in infants, but it may also impact early brain development by altering gene activity in a part of the brain involved in emotions, according to a new study.

Nothing fishy about health benefits of plant-based omega-3 fatty acid

Posted: 17 Nov 2014 02:45 PM PST

Increasing the amount of omega-3s in your diet, whether from fish or flax, will likely decrease your risk of getting heart disease, according to nutritionists. A substantial amount of evidence exists supporting the heart-health benefits of eicosapentaenoic acid and docosahexaenoic acid (EPA and DHA), marine-derived omega-3 fatty acids. However, much less evidence exists to demonstrate the positive effects of alpha-linolenic acid (ALA), a plant-based omega-3 fatty acid.

Why lizards have bird breath: Iguanas evolved one-way lungs surprisingly like those of birds

Posted: 17 Nov 2014 12:46 PM PST

Biologists long assumed that one-way air flow was a special adaptation in birds driven by the intense energy demands of flight. But now scientists have shown that bird-like breathing also developed in green iguanas – reptiles not known for high-capacity aerobic fitness. The finding bolsters the case that unidirectional bird-like flow evolved long before the first birds.

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