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Saturday, September 13, 2014

ScienceDaily: Top Science News

ScienceDaily: Top Science News


How evolutionary principles could help save our world

Posted: 12 Sep 2014 12:21 PM PDT

The age of the Anthropocene -- the scientific name given to our current geologic age -- is dominated by human impacts on our environment. A warming climate. Increased resistance of pathogens and pests. A swelling population. Coping with these modern global challenges requires application of what one might call a more-ancient principle: evolution.

A wife's happiness is more crucial than her husband's in keeping marriage on track

Posted: 12 Sep 2014 10:48 AM PDT

When it comes to a happy marriage, a new study finds that the more content the wife is with the long-term union, the happier the husband is with his life no matter how he feels about the nuptials.

Gray matter matters when measuring risk tolerance: May explain why risk tolerance decreases with age

Posted: 12 Sep 2014 08:24 AM PDT

The gray matter volume of a region in the right posterior parietal cortex is significantly predictive of individual risk attitudes, new research has found. Using a whole-brain analysis, scientists found that the grey matter volume of a region in the right posterior parietal cortex was significantly predictive of individual risk attitudes. Men and women with higher grey matter volume in this region exhibited less risk aversion.

Clues to how giant elliptical galaxies move

Posted: 12 Sep 2014 05:53 AM PDT

New clues to how giant elliptical galaxies move have been discovered by an international team of astronomers. Elliptical galaxies have long been considered as essentially being made up of old stars that move randomly within them, like a swarm of bees. This has been challenged in many instances in the past ten-twenty years, but giant elliptical galaxies are still considered as a nearly round and non-rotating group of old stars by astronomers.

From worm muscle to spinal discs: An evolutionary surprise

Posted: 12 Sep 2014 05:53 AM PDT

Thoughts of the family tree may not be uppermost in the mind of a person suffering from a slipped disc, but those spinal discs provide a window into our evolutionary past. They are remnants of the first vertebrate skeleton, whose origins now appear to be older than had been assumed. Scientists have found that, unexpectedly, this skeleton most likely evolved from a muscle.

Tipping the balance of behavior: Neurons found that control social behavior may have implications for autism

Posted: 11 Sep 2014 03:07 PM PDT

Antagonistic neuron populations in the mouse amygdala that control whether the animal engages in social behaviors or asocial repetitive self-grooming have been recently discovered by researchers. Dubbed a 'seesaw circuit,' this discovery may have implications for understanding neural circuit dysfunctions that underlie autism in humans.

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