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Saturday, November 22, 2014

ScienceDaily: Most Popular News

ScienceDaily: Most Popular News

Geologists discover ancient buried canyon in South Tibet

Posted: 20 Nov 2014 11:17 AM PST

Scientists have discovered an ancient, deep canyon buried along the Yarlung Tsangpo River in south Tibet, north of the eastern end of the Himalayas. The geologists say that the ancient canyon -- thousands of feet deep in places -- effectively rules out a popular model used to explain how the massive and picturesque gorges of the Himalayas became so steep, so fast.

Imagination, reality flow in opposite directions in the brain

Posted: 20 Nov 2014 11:14 AM PST

As real as that daydream may seem, its path through your brain runs opposite reality. Aiming to discern discrete neural circuits, researchers have tracked electrical activity in the brains of people who alternately imagined scenes or watched videos.

NASA's Swift mission probes an exotic object: 'Kicked' black hole or mega star?

Posted: 19 Nov 2014 02:50 PM PST

Astronomers have discovered an unusual source of light in a galaxy some 90 million light-years away. The dwarf galaxy Markarian 177 (center) and its unusual source SDSS1133 (blue) lie 90 million light-years away. The galaxies are located in the bowl of the Big Dipper, a well-known star pattern in the constellation Ursa Major.

New view of mouse genome finds many similarities, striking differences with human genome

Posted: 19 Nov 2014 10:27 AM PST

Looking across the genomes of humans and mice, scientists have found that, in general, the systems that are used to control gene activity in both species have many similarities, along with crucial differences. The results may offer insights into gene regulation and other systems important to mammalian biology, and provide new information to determine when the mouse is an appropriate model to study human biology and disease. They may also help explain its limitations.

A new test measures analytical thinking linked to depression, fueling the idea that depression may be a form of adaptation

Posted: 19 Nov 2014 09:51 AM PST

Researchers studying the roots of depression have developed a test to measure analytical thinking and rumination, that are hallmarks of the condition, leading them closer to the idea that depression may actually be an adaptation meant to help people cope with complex problems such as chronic illnesses or marriage breakups.

Prehistoric landslide discovery rivals largest known on surface of Earth

Posted: 19 Nov 2014 08:28 AM PST

A catastrophic landslide that rivals in size the largest known gravity slide on the surface of the Earth has been mapped in southwestern Utah by geologists. The Markagunt gravity slide, the size of three Ohio counties, covered at least 1,300 square miles and its full scope is still being mapped. It could prove to be larger than the Heart Mountain slide, the largest known on the Earth's surface.

Rosetta's OSIRIS camera spots Philae lander drifting across the comet

Posted: 17 Nov 2014 07:12 AM PST

Incredible new images show the breathtaking journey of Rosetta's Philae lander as it approached and then rebounded from its first touchdown on Comet 67P/Churyumov-Gerasimenko on 12 November 2014.

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