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General Science news 2345

Engineer: Head-first slide is quicker

September 26, 2008 | User rating: 3.8 / 5 after 11 vote(s) | User comments: 6

Base running and base stealing would seem to be arts driven solely by a runner's speed, but there's more than mere gristle, bone and lung power to this facet of baseball -- there are lots of mathematics and physics at play.


Solo Sparkle: Electron give-and-take lets molecules shine individually on camera

September 25, 2008 | User rating: 4.6 / 5 after 19 vote(s) | User comments: 2

A single fluorescent molecule flashing as it gains or loses its electron has made the microscopic spotlight. Watching a whole gaggle of these molecules, they appear to work synchronously; but a new close-up ...


Evidence of evolutionary selection found in 544 genes

September 16, 2008 | User rating: 4.4 / 5 after 45 vote(s) | User comments: 10

(PhysOrg.com) -- By comparing the genomes of humans and five other mammals, Cornell researchers have identified 544 genes that have been shaped by positive selection over millions of years of evolution.


New ant species discovered in the Amazon likely represents oldest living lineage of ants

September 15, 2008 | User rating: 4.5 / 5 after 86 vote(s) | User comments: 7

A new species of blind, subterranean, predatory ant discovered in the Amazon rainforest by University of Texas at Austin evolutionary biologist Christian Rabeling is likely a descendant of the very first ants ...


Potential new drug for cocaine addiction and overdose

September 15, 2008 | User rating: 4.3 / 5 after 13 vote(s) | User comments: 2

Chemists are reporting development of what they term the most powerful substance ever discovered for eliminating cocaine from the body, an advance that could lead to the world's first effective medicine for ...


Study says eyes evolved for X-Ray vision

August 28, 2008 | User rating: 2.9 / 5 after 189 vote(s) | User comments: 26

The advantage of using two eyes to see the world around us has long been associated solely with our capacity to see in 3-D. Now, a new study from a scientist at Rensselaer Polytechnic Institute has uncovered ...


Researchers turn one form of adult mouse cell directly into another

August 27, 2008 | User rating: 4.9 / 5 after 39 vote(s) | User comments: 9

(PhysOrg.com) -- In a feat of biological prestidigitation likely to turn the field of regenerative medicine on its head, Harvard Stem Cell Institute (HSCI) co-director Doug Melton and post doctoral fellow ...


Polymer electric storage, flexible and adaptable

August 20, 2008 | User rating: 4.4 / 5 after 37 vote(s) | User comments: 4

(PhysOrg.com) -- The proliferation of solar, wind and even tidal electric generation and the rapid emergence of hybrid electric automobiles demands flexible and reliable methods of high-capacity electrical storage. Now a ...


Researchers Isolate Microorganisms That Convert Hydrocarbons to Natural Gas

August 19, 2008 | User rating: 4.6 / 5 after 23 vote(s) | User comments: 2

(PhysOrg.com) -- When a group of University of Oklahoma researchers began studying the environmental fate of spilt petroleum, a problem that has plagued the energy industry for decades, they did not expect to eventually isolate ...


Strange molecule in the sky cleans acid rain, scientists discover

August 12, 2008 | User rating: 4.2 / 5 after 48 vote(s) | User comments: 9

Researchers have discovered an unusual molecule that is essential to the atmosphere's ability to break down pollutants, especially the compounds that cause acid rain. It's the unusual chemistry facilitated ...


Human brains pay a price for being big

August 05, 2008 | User rating: 4.4 / 5 after 32 vote(s) | No comments yet

Metabolic changes responsible for the evolution of our unique cognitive abilities indicate that the brain may have been pushed to the limit of its capabilities. Research published today in BioMed Central's open access journal ...


'Chicken and chips' theory of Pacific migration

July 29, 2008 | User rating: 4.4 / 5 after 16 vote(s) | No comments yet

A new study of DNA from ancient and modern chickens has shed light on the controversy about the extent of pre-historic Polynesian contact with the Americas.


How a simple mathematic formula is starting to explain the bizarre prevalence of altruism in society

July 18, 2008 | User rating: 3.7 / 5 after 59 vote(s) | User comments: 13

Why do humans cooperate in things as diverse as environment conservation or the creation of fairer societies, even when they don’t receive anything in exchange or, worst, they might even be penalized?


Researchers Discover Remnant of an Ancient 'RNA World'

July 17, 2008 | User rating: 4.9 / 5 after 27 vote(s) | No comments yet

(PhysOrg.com) -- Some bacterial cells can swim, morph into new forms and even become dangerously virulent - all without initial involvement of DNA. Yale University researchers describe Friday in the journal ...


From humming fish to Puccini: Vocal communication evolved with ancient species

July 17, 2008 | User rating: 4 / 5 after 5 vote(s) | User comments: 2

It's a long way from the dull hums of the amorous midshipman fish to the strains of a Puccini aria – or, alas, even to the simplest Celine Dion melody. But the neural circuitry that led to the human love song – not to mention ...


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