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Science News Archive February 2013 - Page 24


Page 24 of 28

Predicting a low carbon future for Toronto

A study suggests that Toronto can reduce its greenhouse gas emissions by 31-71% by 2031 by implementing a low-carbon urban infrastructure plan. The aggressive scenario includes retrofitting all existing buildings, using renewable heating and cooling systems, and proliferating electric cars.

SourceCanadian Science Publishing·JournalCanadian Journal of Civil Engineering·DateFeb 6, 2013

Study: Buying luxury -- hedonistic or just French?

A study published in Psychology & Marketing compared consumers' perceptions of luxury across nine countries. In the US, luxury goods are bought for self-fulfillment, while in France, they're valued for their exclusivity and high price. Other European countries like Germany, Italy, Hungary, and Slovakia prioritize quality over prestige.

SourceUniversity of Delaware·JournalPsychology and Marketing·DateFeb 6, 2013

Volcano location could be greenhouse-icehouse key

A new study led by Rice University suggests that episodic flare-ups of volcanoes at key locations could be driving Earth's repeated flip-flopping between greenhouse and icehouse states. The researchers found that these continental-arc volcanoes release enormous amounts of carbon dioxide, which drives the climate cycles.

SourceRice University·JournalGeosphere·DateFeb 6, 2013

Profiting from climate change

Researchers found that tiny single-cell organisms are spreading rapidly through the world's oceans, stabilizing coastlines and reefs with their calcareous shells. By 2100, these protozoa may spread closer to the poles, occupying ecological niches left by corals.

SourceUniversity of Bonn·JournalPLOS ONE·DateFeb 6, 2013

Can nerve stimulation help prevent migraine?

A new study published in Neurology suggests that wearing a nerve stimulator for 20 minutes a day can reduce the frequency of migraine attacks. The device delivers electrical stimulation to the supraorbital nerve, resulting in fewer days with migraine and a significant reduction in attack frequency compared to sham treatment.

SourceAmerican Academy of Neurology·JournalNeurology·DateFeb 6, 2013

'Listening to your heart' could improve body image, says study

A recent study published in PLOS ONE found that women who are more aware of their internal bodily signals, such as their heartbeat, tend to have lower levels of self-objectification. This increased awareness is linked to a reduced tendency to think of one's body as an object, rather than a source of physical competence and health.

SourcePLOS·JournalPLOS ONE·DateFeb 6, 2013

Tourists face health risks from contact with captive sea turtles

Contact with captive sea turtles poses a risk of exposure to toxic contaminants and zoonotic pathogens, including bacteria, viruses, fungi, and parasites. The study highlights the importance of awareness among health-care professionals and the public to prevent and control the spreading of sea turtle-related disease.

SourceSAGE·JournalJRSM Short Reports·DateFeb 5, 2013

Purification on the cheap

A new process developed by MIT engineers can produce clean water at relatively low cost, making it a crucial step towards U.S. energy independence and addressing the issue of produced water from natural gas wells. The technology has been patented and is expected to be commercially available within two years.

Researchers use new molecular inhibitors to successfully hit difficult cancer target

Researchers developed a small-molecule inhibitor Y16 that blocks a hard-to-target part of a protein complex linked to several types of invasive cancer. The compound, combined with Rhosin/G04, suppresses RhoA cell signaling and downstream molecular events fueling cancer growth in breast cancer cells.

SourceCincinnati Children's Hospital Medical Center·JournalProceedings of the National Academy of Sciences·DateFeb 5, 2013

Mammogram every 2 years has same benefit as yearly mammogram for older women, UCSF study finds

A UCSF study of over 140,000 women aged 66-89 found that biennial screening led to fewer false positives and no increased risk of late-stage breast cancer. The study suggests life expectancy and co-existing illnesses should be considered when making cancer screening recommendations for older women.

SourceUniversity of California - San Francisco·JournalJNCI Journal of the National Cancer Institute·DateFeb 5, 2013

Giving transplanted cells a nanotech checkup

Scientists at Johns Hopkins Medicine have created a way to monitor the survival of transplanted cells using nanoscale pH sensors and MRI machines. This innovation has the potential to revolutionize cell replacement therapies for conditions like liver failure and type 1 diabetes by providing reliable means of detecting dead cells.

SourceJohns Hopkins Medicine·JournalNature Materials·DateFeb 5, 2013

Tendency to fear is strong political influence

Research by Rose McDermott and colleagues found that people with a genetic liability to experience higher levels of social fear tend to support anti-immigration and pro-segregation policies. Education also plays a significant role in shaping out-group attitudes.

SourceBrown University·JournalAmerican Journal of Political Science·DateFeb 5, 2013

Pest uses plant hairs for protection

A tiny insect that eats plants has developed a unique strategy to evade its beetle predator: using the plant's trichomes for physical protection. This clever tactic allows the pest to crawl between the plant hairs and feed on cycad sap, while the larger beetle cannot follow suit.

SourceUniversity of Guam·JournalPlant Signaling & Behavior·DateFeb 5, 2013

Insect drives robot to track down smells

A small robot was driven by a male silkmoth to track down its sex pheromone, demonstrating the potential for insect-inspired odor tracking. The researchers hope to apply this technology to autonomous robots that can detect environmental spills and leaks.

SourceIOP Publishing·JournalBioinspiration & Biomimetics·DateFeb 5, 2013

MicroRNA molecule may serve as biomarker, target for brain metastases in breast cancer patients

Researchers identified miR-7 as a metastasis suppressor that suppressed cancer stem-like cells' ability to metastasize to the brain. The miR-7/KLF4 axis played a critical role in cancer stem-like cell brain metastasis, suggesting its potential as a diagnostic or therapeutic target for predicting or treating brain metastases.

SourceAmerican Association for Cancer Research·JournalCancer Research·DateFeb 5, 2013

Growth arrest in prostate cancer

A previously poorly investigated signalling pathway is crucial for prostate cancer cell proliferation, involving the production of cAMP at multiple locations in the cell. Inhibiting the soluble adenylyl cyclase enzyme suppresses cancer cell growth, suggesting a promising new therapeutic approach.

SourceRuhr-University Bochum·JournalJournal of Biological Chemistry·DateFeb 5, 2013

Mitochondrial mutations: When the cell's 2 genomes collide

Scientists at Brown University and Indiana University have traced mitochondrial-nuclear incompatibility in fruit flies to individual nucleotide mutations, revealing how the genetic double whammy makes flies sick. The study highlights the importance of considering both genomes in understanding metabolic diseases.

SourceBrown University·JournalPLOS Genetics·DateFeb 5, 2013