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Science News Archive September 2008 - Page 14


Page 14 of 24

Fantastic photographs of fluorescent fish

Research published in BMC Ecology reveals at least 32 reef fish species exhibiting red fluorescence, a previously unknown signaling mechanism. The authors speculate that this phenomenon may serve as a private communication system among fish, allowing for attraction and presence detection.

SourceBMC (BioMed Central)·JournalBMC Ecology·DateSep 15, 2008

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

A new species of blind, subterranean ant, Martialis heureka, has been discovered in the Amazon rainforest and is believed to be a descendant of the first ants to evolve. The ant's unique characteristics, including lack of eyes and pale body color, suggest that it may have evolved adaptations over time to its subterranean habitat.

SourceUniversity of Texas at Austin·JournalProceedings of the National Academy of Sciences·DateSep 15, 2008

Water purification down the nanotubes

Researchers propose using carbon nanotubes to replace conventional materials in water-purification systems due to their unique chemical properties. The technology could efficiently remove arsenic, fluoride, heavy metals and toxic organic chemicals from contaminated water.

SourceInderscience Publishers·JournalInternational Journal of Nuclear Desalination·DateSep 15, 2008

No helicopter moms among Rutgers mutant mice

Rutgers geneticist Gleb Shumyatsky discovered a link between the stathmin gene and helicopter mom behavior in mice. Mice lacking this gene took longer to retrieve pups and showed less cautious behavior towards peers, revealing the importance of innate fear in species survival.

SourceRutgers University·JournalProceedings of the National Academy of Sciences·DateSep 15, 2008

Photosynthesizing bacteria with a day-night cycle contain rare chromosome

Scientists have found a novel linear chromosome in cyanobacterium Cyanothece 51142, containing genes important for producing biofuels. The discovery was made possible by simultaneous DNA sequencing and protein analysis, which revealed more genes on the linear and circular chromosomes than previously thought.

SourceDOE/Pacific Northwest National Laboratory·JournalProceedings of the National Academy of Sciences·DateSep 15, 2008

Laminin builds the neuromuscular synapse

A new study reveals that laminin influences post-synaptic patterning by corraling cell surface receptors on the muscle side of the synapse. Maturation of the muscle side was slowed in mice lacking specific laminin chains, highlighting the protein's role in coordinating nerve and muscle fiber development.

SourceRockefeller University Press·JournalJournal of Cell Biology·DateSep 15, 2008

Unusual case of a woman who suffered stroke during sex

A 35-year-old woman suffered a stroke due to a blood clot caused by a heart defect and birth control pills. She received an interventional neuroradiologist-guided catheter delivery of tPA, resulting in immediate and dramatic improvement. Her stroke score improved from 13 to 1 after treatment.

SourceLoyola Medicine·JournalJournal of Stroke and Cerebrovascular Diseases·DateSep 15, 2008

FEMA awards grant to study New Madrid seismic zone

Researchers Theresa Jefferson and John Harrald will study social vulnerability in response to an earthquake involving the New Madrid fault. The grant from FEMA enables them to focus on displaced persons, shelter needs, commodity requirements, and special needs in Phase III of the Mid America Earthquake Center research agenda.

Slicing solar power costs

University of Utah engineers have developed a new way to slice thin wafers of germanium for use in high-efficiency solar cells. The new method, wire electrical discharge machining (WEDM), reduces waste and breakage of the brittle semiconductor, making it more economical to produce such cells.

SourceUniversity of Utah·JournalJournal of Materials Processing Technology·DateSep 14, 2008

New center aims to eliminate malaria

The University of Queensland's new center, the Pacific Malaria Initiative Support Centre (PacMISC), is part of a global effort to eliminate malaria in low and middle-income countries. PacMISC will focus on Vanuatu and Solomon Islands, providing flexible assistance to national malaria control programs.

New gene variant identified for nondiabetic end stage renal disease in African-Americans

Researchers have identified a new gene variant linked to non-diabetic end-stage renal disease in African Americans, increasing their risk of kidney failure. The MYH9 gene variant is found more frequently among individuals with West African ancestry and may interact with environmental factors to cause the disease.