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Tuesday, November 5, 2013

ScienceDaily: Top Science News

ScienceDaily: Top Science News


Genetic study demonstrates Israel's wild boars originated in Europe

Posted: 04 Nov 2013 12:27 PM PST

Scientists had no reason to suspect Israeli wild boars were any different than their brothers and sisters roaming the Middle East. Now, a researcher demonstrates that, unlike the Near Eastern wild boars in surrounding countries, Israel's wild boars originated in Europe, brought to Israel starting almost 3,000 years ago by the Philistines and other seafaring raiders.

How common are habitable planets? One in five stars may have Earth-size, potentially habitable planets

Posted: 04 Nov 2013 12:27 PM PST

Astronomers analyzed all four years of Kepler data in search of Earth-size planets in the habitable zones of sun-like stars, and then rigorously tested how many planets they may have missed. Based on this analysis, they estimate that 22 percent of stars like the sun have potentially habitable Earth-size planets, though not all may be rocky or have liquid water, a presumed prerequisite for life.

Fossil of largest known platypus discovered in Australia

Posted: 04 Nov 2013 12:27 PM PST

Until recently, the fossil record indicated that the platypus lineage was unique, with only one species inhabiting the Earth at any one time. This picture has changed with the spectacular find of a new, giant species of extinct platypus that was a side-branch of the platypus family tree.

Physicist discovers black holes in globular star clusters, upsetting 40 years of theory: Could there be ripples in spacetime?

Posted: 04 Nov 2013 12:26 PM PST

An astrophysicist was part of a team of researchers that discovered the first examples of black holes in globular star clusters in our own galaxy, upsetting 40 years of theories against their possible existence.

Brain aging is conclusively linked to genes

Posted: 04 Nov 2013 12:26 PM PST

For the first time in a large study sample, the decline in brain function in normal aging is conclusively shown to be influenced by genes, say American researchers.

Fishy behavior solves an animal locomotion mystery

Posted: 04 Nov 2013 12:25 PM PST

The puzzling, apparently wasteful habit of some animals to exert force in the direction opposite of where they want to go actually has an important purpose: to increase both stability and maneuverability.

Civilizations rise and fall on the quality of their soil

Posted: 04 Nov 2013 12:52 AM PST

Great civilizations have fallen because they failed to prevent the degradation of the soils on which they were founded. The modern world could suffer the same fate.

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