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Science News for November 20, 2008


Sea level rise alters bay's salinity

Researchers from Penn State and University of Maryland studied Chesapeake Bay's salinity changes due to sea-level rise. They found an increasing trend in salinity, supporting the hypothesis that climate change is impacting the Bay's ecosystem.

Where there's wildfire smoke, there's toxicity

A new study analyzing particulate matter from Southern California wildfires confirms that the composition of smoke posed more serious potential threats to health than is generally realized. The study found that fire emissions produce a significantly larger aerosol in size, making it easier for particles to penetrate indoor structures.

SourceUniversity of Southern California·JournalEnvironmental Science & Technology·DateNov 20, 2008

Certain skills are predictors of reading ability in young children

Researchers found that differences between pre-K reading-disabled children and their peers diminished by pre-first grade, except for phonological awareness. Phonological awareness skills distinguished the groups at Pre-K and Pre-1, suggesting this skill is a strong predictor of reading disability.

SourceWiley·JournalLearning Disabilities Research and Practice·DateNov 20, 2008

Lactic acid found to fuel tumors

Researchers found lactic acid is an important energy source for tumor cells and discovered a way to destroy hard-to-kill cells by preventing lactate delivery. Blocking lactate transport kills oxygenated cells that starve hypoxic cells, offering a novel approach to treating tumors.

SourceDuke University Medical Center·JournalJournal of Clinical Investigation·DateNov 20, 2008

Oh, what a feeling!

Researchers found that training individuals to read body language, facial expressions, and voice tone in others resulted in significant gains in emotional perception. This skill is crucial for successful social communication and helps overcome chronic social difficulties or isolation. The training regime, known as self-instruction trai...

SourceUniversity of New South Wales·JournalJournal of Head Trauma Rehabilitation·DateNov 20, 2008

Employee engagement dependent upon conditions created by employer

The study examines the meaning of employee engagement, which involves positive feelings about the job and motivation. The authors conclude that employers must create conditions that respect employees' energy and facilitate engagement through fair treatment, creating a feeling of trust and safety.

SourceWiley·JournalIndustrial and Organizational Psychology·DateNov 20, 2008

Pregnant women who do aquarobics have easier deliveries

A recent study published in Reproductive Health found that pregnant women who attended water aerobics classes had shorter labor durations and lower rates of analgesia requests compared to those who did not participate. The research suggests that moderate water aerobics during pregnancy may improve maternal and fetal health outcomes.

SourceBMC (BioMed Central)·JournalReproductive Health·DateNov 20, 2008

JCI table of contents: Nov. 20, 2008

Researchers identified a potential new target for anticancer therapeutics by showing that well-oxygenated tumor cells use lactate as a fuel source, which is released by hypoxic tumor cells. Inhibiting this protein MCT1 disrupts the symbiotic relationship between tumor cell types and leads to decreased tumor growth in mice models.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 20, 2008

Queen's secures £25M for UK's cyber safety

Queen's University Belfast is set to become the UK's lead center for developing technology to counter malicious cyber-attacks. The £25M investment will fund a new Innovation and Knowledge Centre, the Center for Secure Information Technologies (CSIT), which will create secure infrastructure to safeguard electronic information.

NRL scientists study cracks in brittle materials

Researchers used computer modeling and experimentation to investigate how cracks grow at low speeds in silicon, finding rearrangements of atoms associated with ductile materials can occur near the crack tip. This instability can lead to macroscopic changes in the path of the crack, leaving behind ridges on the crack surface.

SourceNaval Research Laboratory·JournalNature·DateNov 20, 2008

11,000 alien species invade Europe

A comprehensive overview of alien species in Europe reveals over 11,000 documented species, with 15% causing economic damages and 15% harming biological diversity. The DAISIE project provides a valuable tool for managing biological invasions in Europe, enabling early detection, eradication, and control methods.

Stanford: Quantum computing spins closer

Researchers at Stanford University have successfully flipped the spin of an electron and measured its new position, a key step towards faster quantum computing. The experiment achieved this in about 100 times less time than previous techniques, using ultrafast lasers.

SourceStanford University·JournalNature·DateNov 20, 2008

Common cold virus came from birds

A virus causing human-like symptoms may have emerged from a bird virus 200 years ago, according to scientists studying the common cold. Human metapneumovirus has high evolutionary rates and is closely related to Avian metapneumovirus C, suggesting a potential species barrier crossing event.

SourceMicrobiology Society·JournalJournal of Virology·DateNov 20, 2008

From genes to farmers' fields

Several new flood-tolerant rice varieties have passed tests in farmers' fields with flying colors, offering a solution to crop losses due to flooding. The varieties, which can withstand 2 weeks of submergence, are nearly identical to their susceptible counterparts but recover after severe flooding to yield well.

Underwater stock options drive top executives turnover

A study published in Personnel Psychology reveals that executives' underwater stock option portfolios are more likely to lead to voluntary turnover. Increasing the value of these portfolios can reduce the odds of turnover by substantially, suggesting that firms may need to consider alternative retention strategies.

SourceWiley·JournalPersonnel Psychology·DateNov 20, 2008

Coming soon: Improved lithium ion batteries?

A team of scientists has developed a new material for anodes that can store more lithium ions than graphite, leading to improved battery performance. The highly porous silicon structure allows for rapid charging and discharging, enabling devices like mobile phones and laptops to run for longer periods.

SourceWiley·DateNov 20, 2008

Researcher tricks immune system in diabetic mice

Researchers at Northwestern University found a way to trick the immune system of mice into believing transplanted islets are their own cells. This technique eliminated the need for immunosuppressive drugs in mice with chemically-induced diabetes after islet transplantation, showing high success rates.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateNov 20, 2008

Scientists discover new species of Ebola virus

The discovery of Bundibugyo ebolavirus represents a significant addition to the puzzle of the Ebola virus genus. The new virus is genetically distinct from all other known Ebola virus species, differing by more than 30% at the genetic level. This finding has implications for the development of diagnostics, antivirals, and vaccines.

SourcePLOS·JournalPLOS Pathogens·DateNov 20, 2008

Preventing tumor cells from refueling: A new anti-cancer approach?

Researchers have identified a potential new target for anticancer therapeutics by showing that well-oxygenated tumor cells use lactate as a fuel, while hypoxic cells use glucose. Inhibiting this protein MCT1 disrupts the symbiotic relationship between the two cell types, leading to decreased tumor growth in mouse models.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 20, 2008

Misreading of damaged DNA may spur tumor formation

Researchers have discovered that cells can turn on tumor-promoting growth circuits as a result of misreading damaged DNA without copying it. The results suggest that DNA damage, if it hits certain critical genes in a cell, could lead to transcriptional mutagenesis that spurs the cell to divide.

SourceEmory Health Sciences·JournalProceedings of the National Academy of Sciences·DateNov 20, 2008