Saturday, May 18, 2013

Paleontology: The Eloquence of Otoliths Seen in a 23-Million-Year-Old Fish Fossil

Fish fossils that are about 23 million years old give unprecedented insight into the evolutionary history of the gobioid order, one of the most species-rich groups among the ...  > full story
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Work-Related Stress Linked to Increased Blood Fat Levels, Cardiovascular Health Risks

New results link job stress to dyslipidemia, a disorder that alters the levels of lipids and lipoproteins in the blood. An altered lipid profile is dangerous for the heart. ...  > full story
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Crickets' Calling Song Hits the High Notes

Research has detailed how acoustic communication has evolved within a unique species of cricket which exploits extremely high frequency harmonics to interact. ...  > full story
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Vicious Cycle: Obesity Sustained by Changes in Brain Biochemistry

Scientists have shown that in the brain cells of rats, obesity impedes the production of a hormone that curbs appetite and inspires calorie burning. The root cause appears to be a breakdown in the protein-processing mechanism ...  > full story
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Spiders: Capturing Prey in Silken Netting and Sticky Hairs

The great ecological success of spiders is often substantiated by the evolution of silk and webs. Biologists have now found an alternative adaptation to hunting prey: hairy adhesive pads, so called scopulae. ...  > full story
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X-Ray Tomography of Living Frog Embryo

Classical X-ray radiographs provide information about internal, absorptive structures of organisms such as bones. Alternatively, X-rays can also image soft tissues throughout early embryonic development of vertebrates. Related to this, a ...  > full story
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Stacking 2-D Materials Produces Surprising Results

New experiments reveal previously unseen effects, could lead to new kinds of electronics and optical devices. ...  > full story
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New Method Proposed for Detecting Gravitational Waves from Ends of Universe

A new window into the nature of the universe may be possible with a device proposed by scientists that would detect elusive gravity waves from the other end of the cosmos. ...  > full story
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World's Biggest Ice Sheets Likely More Stable Than Previously Believed

A new study suggests that the previous connections scientists made between ancient shoreline height and ice volumes are erroneous and that perhaps our ice sheets were more stable in the past than we originally thought. ...  > full story
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Asian Lady Beetles Use Biological Weapons Against Their European Relatives

Once introduced for biological pest control, Asian lady beetle populations have been increasing uncontrollably. Scientists have now found the reason for the animal's success. Its body fluid contains microsporidia, ...  > full story
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DNA-Guided Assembly Yields Novel Ribbon-Like Nanostructures

DNA "linker" strands coax nano-sized rods to line up in way unlike any other spontaneous arrangement of rod-shaped objects. The arrangement -- with the rods forming "rungs" on ladder-like ribbons -- could result in the ...  > full story
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Invasive 'Crazy Ants' Are Displacing Fire Ants in Areas Throughout Southeastern U.S.

Invasive "crazy ants" are displacing fire ants in areas across the southeastern United States, according to researchers at The University of Texas at Austin. It's the latest in a ...  > full story
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Most Math Being Taught in Kindergarten Is Old News to Students

Kindergarten teachers report spending much of their math instructional time teaching students basic counting skills and how to recognize geometric shapes -— skills the students have already mastered before ever setting foot in the kindergarten ...  > full story

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Matter & Energy

Physicists Let Magnetic Dipoles Interact on the Nanoscale for the First Time

Physicists have found out how tiny islands of magnetic material align themselves when sorted on a regular lattice -- by measurements at BESSY II. Contrary to expectations, the north and south poles of the magnetic islands did not arrange themselves ...  > full story

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Big Quakes Trigger Small Quakes

Seismologists found that L-waves, slow-moving seismic surface waves, from larger earthquakes can trigger smaller earthquakes as they travel through. ...  > full story

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