Τρίτη, 10 Ιουνίου 2014

ScienceDaily: Top Science News

ScienceDaily: Top Science News


Milky Way may bear 100 million life-giving planets

Posted: 09 Jun 2014 07:07 AM PDT

There are some 100 million other places in the Milky Way galaxy that could support complex life, according to new research by astronomers. They have developed a new computation method to examine data from planets orbiting other stars in the universe.

Turing Test success marks milestone in computing history

Posted: 09 Jun 2014 06:38 AM PDT

An historic milestone in artificial intelligence set by Alan Turing -- the father of modern computer science -- has been achieved. The 65 year-old iconic Turing Test was passed for the very first time by supercomputer Eugene Goostman during Turing Test 2014 held at the Royal Society in London on June 7, 2014. 'Eugene', a computer program that simulates a 13-year-old boy, managed to convince 33% of the human judges that it was human.

Facing a violent past: Evolution of human ancestors' faces a result of need to weather punches during arguments, study suggests

Posted: 09 Jun 2014 06:36 AM PDT

An alternative to the previous long-held hypothesis that the evolution of the robust faces of our early ancestors resulted largely from the need to chew hard-to-crush foods such as nuts has been presented by researchers. The prehistoric version of a bar fight -- over women, resources and other slug-worthy disagreements -- are what shaped our facial evolution, new research suggests.

I shouldn't have eaten there: Rats show behavior of 'regret' in choosing the wrong 'restaurant'

Posted: 08 Jun 2014 12:27 PM PDT

New research reveals that rats show signs of 'regret' -- a cognitive behavior once thought to be uniquely and fundamentally human. To measure the cognitive behavior of regret, scientists developed a task that asked rats how long they were willing to wait for certain foods. In this task, the rats are presented with a series of food options but have limited time at each 'restaurant.'

Warming climates intensify greenhouse gas given out by oceans

Posted: 08 Jun 2014 12:27 PM PDT

Rising global temperatures could increase the amount of carbon dioxide naturally released by the world's oceans, fueling further climate change, a study suggests. Scientists studied a 26,000-year-old sediment core to find out how the ocean's ability to take up atmospheric CO2 has changed over time, and found that when silicon was least abundant in ocean waters corresponded with relatively warm climates, low levels of atmospheric iron, and reduced CO2 uptake by the oceans' plankton.

Quick getaway: How flies escape a looming predator

Posted: 08 Jun 2014 12:25 PM PDT

Every millisecond counts when a fruit fly is being hunted by a damselfly. Scientists find that fruit flies can deploy two escape behaviors, depending on circumstances. New research reveals how a quick-escape circuit in the fly's brain overrides the fly's slower, more controlled behavior when a threat becomes urgent.

How we use the 'GPS' inside our brain to navigate

Posted: 05 Jun 2014 11:16 AM PDT

The way we navigate from A to B is controlled by two brain regions which track the distance to our destination, according to new research. The study found that at the beginning of a journey, one region of the brain calculates the straight-line to the destination ('the distance as a crow flies'), but during travel a different area of the brain computes the precise distance along the path to get there.

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