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General Science news 1234

Large mammal species live harder, die out faster

May 07, 2008 | User rating: 4.3 / 5 after 23 vote(s) | User comments: 3

Throughout Earth’s history, species have come and gone, being replaced by new ones that are better able to cope with life’s challenges. But some species last longer than others, while others may die out sooner ...


New evidence from earliest known human settlement in the Americas

May 08, 2008 | User rating: 4.6 / 5 after 35 vote(s) | No comments yet

New evidence from the Monte Verde archaeological site in southern Chile confirms its status as the earliest known human settlement in the Americas and provides additional support for the theory that one early ...


Platypus genome explains animal's peculiar features; holds clues to evolution of mammals

May 07, 2008 | User rating: 4.5 / 5 after 27 vote(s) | User comments: 3

The duck-billed platypus: part bird, part reptile, part mammal -- and the genome to prove it. An international consortium of scientists, led by Washington University School of Medicine in St. Louis, has decoded ...


Female concave-eared frogs draw mates with ultrasonic calls

15 hours ago | User rating: 4.9 / 5 after 7 vote(s) | User comments: 1

Most female frogs don’t call; most lack or have only rudimentary vocal cords. A typical female selects a mate from a chorus of males and then –silently – signals her beau. But the female concave-eared torrent ...


A crash course in true political science

May 10, 2008 | User rating: 4.4 / 5 after 24 vote(s) | User comments: 4

(AP) -- Daniel Suson has a doctorate in astrophysics and has worked on the superconducting super collider and a forthcoming NASA probe. Now he's heading back to school to take on an even trickier task - getting ...


Retailers can use DNA tracing to track meat

May 09, 2008 | User rating: not shown ( 4 vote(s) ) | User comments: 1

(AP) -- Meat retailers can now trace their wares from the ranch to the refrigerator case using DNA analysis. IdentiGEN Ltd., based in Ireland with U.S. offices in Lawrence, Kan., said its DNA TraceBack technology ...


Study debunks myth of job testing as race barrier

May 09, 2008 | User rating: 4.6 / 5 after 5 vote(s) | User comments: 1

Conventional wisdom holds that the standardized tests some employers require of job applicants serve as a barrier to equal employment. But a pioneering study shows just the opposite: Screening increases employers' precision ...


Spain claims $500 million in sunken treasure

May 09, 2008 | User rating: 3.6 / 5 after 22 vote(s) | User comments: 8

(AP) -- Spain formally laid claim Thursday to a shipwreck that yielded a $500 million treasure, saying it has proof the vessel was Spanish.


Oldest gorilla in captivity turns 55 at Dallas Zoo

May 09, 2008 | User rating: not shown ( 1 vote(s) ) | No comments yet

(AP) -- A gorilla recognized as the world's oldest in captivity celebrated her 55th birthday by munching down a four-layer frozen fruit cake and banana leaf wrapped treats.


New idea in mortuary science: Dissolving bodies with lye

May 08, 2008 | User rating: 3.5 / 5 after 11 vote(s) | User comments: 7

(AP) -- Since they first walked the planet, humans have either buried or burned their dead. Now a new option is generating interest - dissolving bodies in lye and flushing the brownish, syrupy residue down ...


Scientists identify key roadblock to gene expression

May 08, 2008 | User rating: 3.4 / 5 after 5 vote(s) | No comments yet

A team of scientists has provided, for the first time, a detailed map of how the building blocks of chromosomes, the cellular structures that contain genes, are organized in the fruit fly Drosophila melanogaster. ...


Warming up for Magnetic Resonance Imaging

May 08, 2008 | User rating: 4.8 / 5 after 18 vote(s) | User comments: 1

Standard magnetic resonance imaging, MRI, is a superb diagnostic tool but one that suffers from low sensitivity, requiring patients to remain motionless for long periods of time inside noisy, claustrophobic ...


Researchers identify photosynthetic dimmer switch

May 08, 2008 | User rating: 4.4 / 5 after 8 vote(s) | No comments yet

In a study of the molecular mechanisms by which plants protect themselves from oxidation damage should they absorb too much sunlight during photosynthesis, a team of researchers has discovered a molecular ...


Canadian teen makes sticky molecule in bid to diagnose, prevent flu

May 08, 2008 | User rating: 4.5 / 5 after 10 vote(s) | User comments: 1

A Canadian high school student has won a national science competition for her new molecule that binds to flu viruses, which may eventually be used to diagnose or prevent flu infections.


Surprising discovery: Multicellular response is 'all for one'

May 08, 2008 | User rating: 4.3 / 5 after 10 vote(s) | User comments: 1

Real or perceived threats can trigger the well-known “fight or flight response” in humans and other animals. Adrenaline flows, and the stressed individual’s heart pumps faster, the muscles work harder, the brain sharpens ...


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