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Science News Archive February 2015 - Page 23


Page 23 of 31

Pick a card, any card

A study by McGill University researchers found that people tend to choose options that are more salient or attention-grabbing, but may not be aware of why they chose them. In a card trick experiment, participants chose the target card in over 90% of trials, despite feeling they had a free choice.

SourceMcGill University·JournalConsciousness and Cognition·DateFeb 9, 2015

Commons Lab releases 2 new reports on key aspects of Citizen Science

The Commons Lab has released two new reports on key aspects of Citizen Science, focusing on successful projects in Europe and exploring potential legal issues surrounding intellectual property. The reports aim to support policymaking and growth of citizen science by addressing ethical, legal, and social implications.

Can't sing? Do it more often

New research from Northwestern University suggests that singing accurately is a learned skill that can decline over time if not used. Regular practice can help improve singing skills and prevent the 'use it or lose it' effect, where adults may struggle to sing on key as they age.

SourceNorthwestern University·JournalMusic Perception An Interdisciplinary Journal·DateFeb 9, 2015

F-bombs notwithstanding, all languages skew toward happiness

A new study by University of Vermont researchers confirms that humans use more positive words than negative ones across ten languages, including Arabic, Korean, and Chinese. The study analyzed billions of words from various sources and found a consistent positivity bias, indicating that language itself has a positive outlook.

SourceUniversity of Vermont·JournalProceedings of the National Academy of Sciences·DateFeb 9, 2015

Controlling genes with light

Researchers at Duke University have devised a method to activate genes in specific locations using light, allowing for precise control over genetic expression. This technology has the potential to revolutionize genetic engineering and may lead to breakthroughs in tissue engineering and regenerative medicine.

SourceDuke University·JournalNature Chemical Biology·DateFeb 9, 2015

New method to understand steel fracturing

Scientists have developed a new method to study steel fracturing using high-resolution images from a scanning electron microscope. The research revealed the connection between microstructure and porosity in sintered steels, identifying angular pores as initial points of 'nucleation' that initiate breaking.

SourceUniversidad Carlos III de Madrid·JournalPowder Metallurgy·DateFeb 9, 2015

Coral snake venom reveals a unique route to lethality

Researchers discovered that coral snake venom's toxins permanently activate crucial nerve cell proteins, preventing reset and causing deadly seizures. The toxins target GABA(A) receptors, making them 100 times tighter than known compounds, leading to permanent opening of the receptor's pore.

SourceJohns Hopkins Medicine·JournalProceedings of the National Academy of Sciences·DateFeb 9, 2015

Study finds no reason for cancer survivors to be excluded in advanced stage lung cancer trials

A recent study by UT Southwestern Medical Center found that patients with a prior cancer diagnosis have similar clinical outcomes to those without a history of cancer. The researchers studied over 102,000 patients and found that these patients had better overall survival and lung cancer-specific survival rates.

SourceUT Southwestern Medical Center·JournalJNCI Journal of the National Cancer Institute·DateFeb 9, 2015

Drug detectives

A new screening method uses lipid bilayer properties to predict toxicity, identifying probable cytotoxic drugs at an early stage in development. The Gramicidin-Based Fluorescence Assay (GBFA) tracks changes in protein function as a way of monitoring lipid bilayer alterations.

Bacteria's hidden traffic control

Researchers have mapped nearly every protein in a bacterial cell for its entire cell cycle, discovering a large number of distinct patterns with subtle spatial and temporal differences. This approach has implications for understanding how bacteria coordinate the timing and location of subcellular processes.

'Virtual virus' unfolds the flu on a CPU

Scientists at the University of Oxford have built a complete model of the outer envelope of an influenza A virion using a coarse-grained molecular dynamics simulation. The simulation reveals various characteristics about the membrane components, including the separation of spike proteins and their interactions with host cells. This res...

Forcing wounds to close

Researchers at National University of Singapore discover that cells exert directional forces to close gaps in protective epithelial barriers, even when underlying layers are damaged. This 'tug-of-war' mechanism drives mechanical forces responsible for gap closure.

SourceNational University of Singapore·JournalNature Communications·DateFeb 8, 2015

What's next in diets: Chili peppers?

A team of researchers at the University of Wyoming found that adding capsaicin from chili peppers to a diet can stimulate energy metabolism and burn stored fat, potentially preventing obesity. The study used mice on high-fat diets and found that dietary capsaicin increased metabolic activity and energy expenditure.

Anorexia nervosa

A study led by Dr. Howard Steiger found that individuals with anorexia nervosa exhibit disorder-relevant alterations in DNA methylation, affecting emotional reactions, physiological functions, and behaviors. Early treatment is crucial to prevent chronicity of the illness.

SourceDouglas Mental Health University Institute·JournalInternational Journal of Eating Disorders·DateFeb 7, 2015

The battle for iron

Scientists at EMBL and Heidelberg University Clinic have discovered a new way to starve pathogens of iron, using the immune system's TLR2 and TLR6 molecules. This finding offers an alternative approach to treatments for anaemia of chronic disease, which affects chronically ill patients.

Astronomers breathe new life into venerable instrument

A team of astronomers successfully restored the Half-wave Spectropolarimeter (HPOL) instrument, allowing it to conduct measurements with improved performance. The upgraded HPOL is now fully operational at the University of Toledo's Ritter Observatory and enables researchers to study variable or transient objects more effectively.

SourceWorld Scientific·JournalJournal of Astronomical Instrumentation·DateFeb 6, 2015

New method for minimally invasive tissue ablation surgery

A new method for minimally invasive tissue ablation surgery combines electrolysis with reversible electroporation, increasing the effectiveness of the procedure. The technique allows for faster treatment and greater control over the target area, potentially leading to safer and more effective cancer treatment.

SourceWorld Scientific·JournalTECHNOLOGY·DateFeb 6, 2015

Researchers reveal how hearing evolved

Studies on lungfish and salamander hearing shed light on the evolution of aerial hearing in early terrestrial vertebrates, suggesting they could have detected airborne sound without a tympanic middle ear. The research provides insight into the development of hearing 250-350 million years ago.

We're all going to die; DNA strands on the end of our chromosomes hint when

Research finds a connection between telomere mutations and lung disease, with shorter telomeres indicating a greater chance for bone marrow failure, liver disease, skin disease, and other conditions. The study also highlights the importance of telomere research in understanding lung disease and its potential impact on future generations.

SourceBrigham Young University·JournalJournal of Clinical Investigation·DateFeb 6, 2015