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Science News Archive September 2017 - Page 8


Page 8 of 39

High-fidelity recording of molecular geometry with DNA 'nanoscopy'

Researchers at Harvard's Wyss Institute create a DNA nanotechnology-based method, called Auto-cycling Proximity Recording (APR), that allows for repeated, non-destructive recording of molecular pairings. This enables the creation of detailed views of molecular structures and observation of different structural states.

Organic consumers mean business

Research from Aarhus University found that once consumers start buying organic products, they are likely to continue and increase the number of organic products on their shopping list. This is due to a phenomenon known as a behavioural spillover effect, where purchasing organic products strengthens consumers' moral identity.

SourceAarhus University·JournalJournal of Consumer Research·DateSep 25, 2017

Do you really need that MRI?

A study by UT Southwestern Medical Center found that clinicians' prior image-ordering habits and equipment ownership are strong indicators of unnecessary MRI orders. This highlights the need for physicians to offer financially responsible care, particularly in cases of uncomplicated back pain and headaches.

SourceUT Southwestern Medical Center·JournalJAMA Internal Medicine·DateSep 25, 2017

How vision shapes touch

A neuroimaging study reveals that blind individuals perform better on a touch discrimination task when their hands are crossed due to stronger frontal-parietal connectivity. In contrast, sighted individuals show greater activity in parietal and premotor areas with uncrossed hands.

With extra sugar, leaves get fat too

Researchers at Brookhaven National Laboratory found that increasing sugar levels in plant leaves increases oil content, which could lead to the production of biofuels and useful chemicals. By selectively breeding plants with specific traits, they successfully tipped the balance of plant metabolism to favor higher oil production.

SourceDOE/Brookhaven National Laboratory·JournalPLANT PHYSIOLOGY·DateSep 25, 2017

Climate change can goad volcanoes into life

Researchers found that climate change led to a sharp rise in volcanic activity as the Mediterranean Sea dried up, contradicting previous hypotheses. The study used numerical models to test scenarios and confirmed that the massive loss of sea level was the primary cause of increased magmatic activity.

SourceUniversité de Genève·JournalNature Geoscience·DateSep 25, 2017

Creating brain cells to detect Tourette's

Researchers at Rutgers University created brain cells from blood samples of individuals in a three-generation family with Tourette syndrome. The study found that a mutation in the PNKD gene is likely the cause of the disorder, which affects one in every 100-150 people in the US.

SourceRutgers University·JournalMolecular Psychiatry·DateSep 25, 2017

Geophysical investigation aims revealing how vegetation responds to climate change

A team of scientists from five countries analyzed sediment cores to reconstruct the past 1 million years of the Atlantic Rainforest biome in southern Brazil. The research aimed to understand how vegetation responded to climate change, using sediment samples that contained information about plant cover, rainfall, and subsoil communities.

Psychological impacts of natural disasters on youth

A new criterion for studying post-traumatic stress disorder in children has been developed, identifying those who need support services after a disaster. The study found that two-thirds of distressed children recover naturally over time, with factors such as social support and coping skills playing a key role.

SourceUniversity of Miami·JournalInternational Journal of Clinical and Health Psychology·DateSep 25, 2017

Multinationals operating in tax havens avoid reporting specifics, finds study

A new study finds that US multinationals operating in tax havens often report earnings by broad categories instead of individual countries, making it harder to track profits and identify potential tax avoidance. Larger companies and those in resource-intensive industries are particularly likely to be vague about their reporting.

SourceUniversity of Toronto, Rotman School of Management·JournalJournal of International Business Studies·DateSep 25, 2017

Goodbye, login. Hello, heart scan

A University at Buffalo-led team has developed a non-contact, remote biometric tool using the dimensions of your heart as an identifier. The system, which was three years in the making, continually monitors a user's heart to ensure only authorized individuals can access their computer.

Maternal diet could affect kids' brain reward circuitry

A study found that rats whose mothers ate a junk food diet during pregnancy had offspring that preferred fatty foods and showed altered brain reward circuitry into adulthood. A balanced diet in childhood seemed to reduce this preference, but did not eliminate it entirely.

SourceFrontiers·JournalFrontiers in Endocrinology·DateSep 25, 2017

New delayed-release stimulant improves morning ADHD symptoms and all-day functioning

A phase 3 study of children ages 6-12 years with ADHD found that a delayed-release, long-acting formulation of methylphenidate improved ADHD symptoms and functional impairment in the morning. The medication provided sustained release throughout the day, reducing the need for multiple doses.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalJournal of Child and Adolescent Psychopharmacology·DateSep 25, 2017

Woman develops rare life-threatening condition after liposuction

A 45-year-old woman developed a rare but life-threatening condition called fat embolism syndrome (FES) after undergoing liposuction. FES is notoriously difficult to diagnose due to a lack of standardized diagnostic criteria, emphasizing the need for clinicians to think outside the box and consider alternative diagnoses.

SourceBMJ Group·JournalBMJ Case Reports·DateSep 25, 2017