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Science News Archive February 2013 - Page 11


Page 11 of 28

Don't trust liposomes in your beauty products

Researchers from University of Southern Denmark used RICS technique to investigate liposome movement on skin. They found that liposomes are destroyed before entering the skin and spilling their cargo of active ingredients. The study advises against trusting claims about liposomes carrying active ingredients into the skin.

SourceUniversity of Southern Denmark·JournalJournal of Investigative Dermatology·DateFeb 19, 2013

How the whale got its teeth

A multidisciplinary team of researchers investigated how whales got their teeth by analyzing the fossil record and embryonic development process. They found that whales evolved simpler teeth around 30 million years ago, which are shaped by proteins BMP4 and FGF8 during development.

SourcePeerJ·JournalPeerJ·DateFeb 19, 2013

How predictable is evolution?

Researchers found that identical mutations led to the evolution of specialized physiologies in three different populations of E. coli. The study suggests that negative frequency dependence plays a key role in driving diversification, and highlights the potential for predictability in evolutionary processes.

SourcePLOS·JournalPLOS Biology·DateFeb 19, 2013

Unplanned hospitalization more likely in people with several illnesses, mental health conditions

A study of over 180,000 people in Scotland found that those with multiple chronic health conditions and mental illness had significantly higher rates of unplanned hospital admissions. The risk was further increased among those from lower socioeconomic backgrounds, highlighting the need for better coordinated care and prioritization of ...

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateFeb 19, 2013

Is there a link between childhood obesity and ADHD, learning disabilities?

A University of Illinois study found a possible link between high-fat diets and childhood brain-based conditions like ADHD and memory-dependent learning disabilities. High-fat diets triggered anxious behaviors and learning deficiencies in juvenile mice, which were reversed by methylphenidate treatment.

Using mouthrinse reduces plaque and gingivitis more than toothbrushing alone

A six-month study published in General Dentistry found that using a germ-killing mouthrinse twice daily significantly reduced plaque and gingivitis compared to brushing alone. The study involved 139 adults with mild to moderate plaque and gingivitis, showing a 26.3% reduction in plaque and a 20.4% reduction in gingivitis.

SourceAcademy of General Dentistry·JournalEuropean Journal of General Dentistry·DateFeb 19, 2013

NYU's Shedlin publishes study on the health of Colombian refugees in Ecuador

A recent study by NYU's Michele Shedlin documents food and housing insecurity, lack of adequate healthcare, and the impact of prior violence and current stigma & discrimination on mental and physical health. The research highlights the urgent need for identifying specific health risks experienced by mobile and displaced populations.

SourceNew York University·JournalJournal of Immigrant and Minority Health·DateFeb 19, 2013

Caffeine linked to low birth weight babies

Research published in BMC Medicine found that caffeine from all sources reduces birth weight and increases pregnancy length by 5 hours per day. Caffeine intake from coffee was associated with an even longer gestational length, increasing risk of small for gestational age at birth by almost a third

SourceBMC (BioMed Central)·JournalBMC Medicine·DateFeb 18, 2013

Reduced sea ice disturbs balance of greenhouse gases

A new study by Lund University researchers reveals that reduced Arctic sea ice is causing a significant disturbance to the balance of greenhouse gases in the atmosphere. This change has far-reaching consequences for the global climate, as plants and oceans absorb half of the carbon dioxide released into the air through human activities.

SourceLund University·JournalNature Climate Change·DateFeb 18, 2013

New projections of 'uneven' global sea-level rise

A new study projects that global sea-level rise will not be uniform, with certain regions experiencing higher rates of rise. The team used sophisticated computer modeling to show how ice loss from glaciers and ice sheets will impact regional sea levels, particularly in the Equatorial Pacific Ocean.

SourceBritish Antarctic Survey·JournalGeophysical Research Letters·DateFeb 18, 2013

Solar sponge' soaks up CO₂ emissions

CSIRO researchers develop a 'solar sponge' that captures CO2 using natural sunlight, then releases it instantly when exposed to UV light. This breakthrough presents an energy-efficient method for recycling CO2 emissions, reducing the need for coal-based energy and conserving up to 30% of power plant production capacity.

SourceCSIRO Australia·JournalAngewandte Chemie·DateFeb 18, 2013

New insight into dogs fear responses to noise

A study by the University of Bristol has found that almost half of dog owners reported their pet showing fear signs when exposed to loud noises, but only a quarter considered their pet fearful. The research highlights the importance of early life experience and exposure to specific loud noises in developing fear responses.

SourceUniversity of Bristol·JournalApplied Animal Behaviour Science·DateFeb 18, 2013