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Science News Archive July 2013 - Page 21


Page 21 of 31

Economic crisis lowers birth rates

A new study by Max-Planck-Gesellschaft researchers finds that rising unemployment rates in Europe have led to a decrease in fertility, with young adults being the most affected. The drop in children per woman was strongest for first births, with many postponing family formation.

SourceMax-Planck-Gesellschaft·JournalDemographic Research·DateJul 10, 2013

Oldest use of flowers in grave lining

Archaeologists at the Weizmann Institute of Science have discovered the oldest known use of flowers in grave lining, dating back 11,700 to 13,700 years. The graves were found to contain Judean sage, mint, and figwort plants, which suggest that ancient humans had a positive association with flowers.

SourceWeizmann Institute of Science·JournalProceedings of the National Academy of Sciences·DateJul 10, 2013

Jagged graphene edges can slice into cell membranes

Researchers at Brown University have discovered that graphene's sharp corners and jagged protrusions can pierce cell membranes, potentially disrupting normal function. The findings may help minimize the potential toxicity of graphene, a material with numerous commercial applications.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateJul 10, 2013

Toward a safer form of acetaminophen

Researchers have developed two compounds that show promise as safer alternatives to acetaminophen, reducing the risk of liver damage. The new substances have a similar architecture to acetaminophen but are non-toxic to liver cells grown in the laboratory.

SourceAmerican Chemical Society·JournalACS Medicinal Chemistry Letters·DateJul 10, 2013

Test tube children develop mentally normal

A new research project from Aarhus University found that test-tube children are generally as mentally healthy as naturally conceived children. However, children born to mothers who received hormone stimulation treatment for infertility have a small but increased risk of developing mental disorders such as autism or ADHD.

Stanford researchers say 'peak oil' concerns should ease

A new study by Stanford University researchers concludes that the demand for oil will reach its peak and decline due to economic growth limitations and increasing use of alternative fuels. Historically, there is a connection between economic growth and oil consumption breaking down, leading to more efficient alternatives.

SourceStanford University·JournalEnvironmental Science & Technology·DateJul 10, 2013

Typhoid's lethal secret revealed

The study reveals that Salmonella typhi's powerful typhoid toxin is responsible for the devastating symptoms of typhoid fever. The discovery could lead to the development of effective vaccines and therapeutics targeting this toxin, offering hope for saving millions of lives.

SourceYale University·JournalNature·DateJul 10, 2013

Bacteria from Salar de Uyuni in Bolivia conceal bioplastic

Researchers have discovered a bacterium in South America that produces poly-beta-hydroxybutyrate (PHB), a biodegradable compound used in the food, pharmaceutical, and cosmetic industries. The strain, Bacillus megaterium Uyuni S29, produces large amounts of PHB, making it a promising natural substitute for petroleum-based plastics.

SourceSpanish Foundation for Science and Technology·JournalJournal of Applied Microbiology·DateJul 10, 2013

Efficiency in the forest

A Harvard study found that forests across the globe are becoming more efficient in using water, contrary to expectations. The research team used long-term data from over 20 years of eddy covariance measurements to show that forests are storing more carbon and growing faster due to increased atmospheric carbon dioxide levels.

SourceHarvard University·JournalNature·DateJul 10, 2013

Cyberbullying on college campuses bringing new ethical issues, UT Arlington researcher says

A recent study by UT Arlington professor Jiyoon Yoon found that cyberbullying in the college environment can pose serious consequences, including physical endangerment. The researchers also discovered that most respondents considered cyberbullying to be more prevalent at the secondary school level.

SourceUniversity of Texas at Arlington·JournalThe Journal of Information and Systems in Education·DateJul 10, 2013

Protein targeted for cancer drug development is essential for normal heart function

Scientists at St. Jude Children's Research Hospital discovered that protein MCL1 is essential for normal cardiac function, complicating cancer drug development efforts. The study suggests that targeting MCL1 expression in target cells may be beneficial for treating heart muscle damage following heart attacks or other insults.

SourceSt. Jude Children's Research Hospital·JournalGenes & Development·DateJul 10, 2013

Vaccinated children: A powerful protection for older adults, Vanderbilt study shows

A new Vanderbilt study finds that vaccinated children are reducing the spread of pneumonia to grandparents and other older adults. The vaccine has been linked to a 40% reduction in pneumonia hospitalizations among young children, while also benefiting older adults with significant reductions in hospitalizations across age groups.

SourceVanderbilt University Medical Center·JournalNew England Journal of Medicine·DateJul 10, 2013

Scientists decode mystery sequences involved in gene regulation

A team of researchers has created the first-ever compendium of RNA-binding sequences, which will become a valuable resource for researchers studying human genetics. The study reveals similarities between humans and fruit flies in terms of binding sequences, suggesting that many proteins bind to similar sequences across species.

SourceCIFAR·JournalNature·DateJul 10, 2013