PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Evidence of Viking/Norse metalworking in Arctic Canada

2014-12-15
(Press-News.org) A small stone container found by archaeologists a half-century ago has now been recognized as further evidence of a Viking or Medieval Norse presence in Arctic Canada during the centuries around 1000 A.D.

Researchers reporting in the journal Geoarchaeology discovered that the interior of the container, which was found at an archaeological site on southern Baffin Island, contains fragments of bronze as well as small spherules of glass that form when rock is heated to high temperatures. The object is a crucible for melting bronze, likely in order to cast it into small tools or ornaments. Indigenous peoples of northern North America did not practice high-temperature metalworking.

The Norse would likely have travelled to the area to obtain furs and walrus ivory. "The crucible adds an intriguing new element to this emerging chapter in the early history of northern Canada," said lead author Dr. Patricia Sutherland, who has recovered other specimens in Arctic Canada that resemble those used by Europeans of the Viking and Medieval periods. "It may be the earliest evidence of high-temperature nonferrous metalworking in North America to the north of what is now Mexico."

INFORMATION:



ELSE PRESS RELEASES FROM THIS DATE:

How blood parasites colonize and persist in small island bird populations

2014-12-15
A new study highlights the complex factors at play for parasites that infect animal populations residing on small islands. The findings are important for understanding colonization and extinction as drivers of island biogeography. Investigators who studied the mechanisms that contribute to colonization and persistence of avian malaria parasites in an island bird population found that increases in the prevalence and diversity of parasites were associated with episodes of offshore winds and less so with infected vagrant birds arriving from the mainland. "We were surprised ...

Do crows have an impact on the population of their prey?

2014-12-15
They steal, raid nests, and keep the company of witches, but the unpopular crow may not be as big a menace as people think. A new Ibis study has found that crows--along with their avian cousins the magpie and the raven--have surprisingly little impact on the abundance of other bird species. Collectively known as corvids, these birds are in fact being menaced by mankind in the mistaken belief that removing them is good for conservation. "These results have big implications for the likely benefits of corvid control," said senior author Dr. Arjun Amar. "They suggest that ...

How trap-flowers attract and deceive pollinating food thieves

2014-12-15
Researchers have discovered a new pollination system that involves food-thieving flies as pollinators. These flies feed on insect secretions, available when a spider, a praying mantis, or other predatory arthropods feed on insects. The plant mimics compounds released from freshly killed insects to deceive flies that are in search of food. This pollination strategy applies to Aristolochia rotunda--an herbaceous Mediterranean plant--but likely evolved in other plants as well. "The finding was unexpected as Aristolochia species were believed to mimic egg-laying sites of ...

Female sexual arousal: Facilitating pleasure and reproduction

2014-12-15
Despite numerous studies, publications, and commentaries on human female sexual arousal and orgasm, there is still so much to study and understand about women's sexual pleasure. A new review deals critically with many aspects of the genital anatomy of the human female in relation to inducing sexual arousal and its relevance to both procreation and recreation. A number of questions remain, including why there are so many sites for arousal, why multiple orgasms occur, and how sexual stimulation affects the brain. "The review is an attempt to show the weaknesses in some ...

Mobility disabilities can contribute to complications during pregnancy

2014-12-15
A new study indicates that women with mobility disabilities often experience problems during pregnancy related to their functional impairments. The study included 8 women with spinal cord injuries, 4 with cerebral palsy, and 10 with other conditions. Impairment-related complications during pregnancy included falls, urinary tract and bladder problems, wheelchair fit and stability problems, significant shortness of breath, increased spasticity, bowel management difficulties, and skin integrity problems. "Relatively little information is available about the pregnancy ...

Even expectant dads experience prenatal hormone changes

2014-12-15
Researchers recently completed one of the most extensive investigations to date of prenatal hormones in first-time expectant couples. Women showed large prenatal increases in salivary testosterone, cortisol, estradiol, and progesterone, while men showed significant prenatal declines in testosterone and estradiol, but no detectable changes in cortisol or progesterone. While the results in women were expected, the results seen in men suggest that impending fatherhood might cause men's hormone levels to change. Additional studies are warranted to understand whether partners' ...

Affordable Care Act increases reliance on emergency rooms, WSU study finds

2014-12-15
Detroit - The Patient Protection and Affordable Care Act may have provided health care insurance to an estimated 20 million Americans who lacked coverage, but it has not eased the demand on the nation's emergency departments. In fact, since the law's passage, reliance upon the nation's emergency rooms for non-emergency care has increased. That's the finding of a study published online in the American Journal of Emergency Medicine by a second-year medical student at the Wayne State University School of Medicine and his colleagues. In "Access to care issues and the role ...

Review highlights ways to prevent and manage jaw bone disease

2014-12-15
A review of more than a decade's worth of research on osteonecrosis of the jaw--when the bone in the jaw is exposed and begins to starve from a lack of blood--points to an increased risk for patients taking certain drugs for osteoporosis, anticancer drugs or glucocorticoids, those undergoing dental surgery, and people with poor oral hygiene, chronic inflammation, diabetes, or ill-fitting dentures. A number of prevention strategies may help protect at-risk individuals, and treatments that are available or under study include the use of antibiotics, surgery, teriparatide, ...

CCNY psychologist links burnout and depression

2014-12-15
Research by City College of New York psychology Professor Irvin Schonfeld in the Colin Powell School for Civic and Global Leadership suggests a strong connection between burnout and depression. In a study of more than 5,500 school teachers to estimate the prevalence of depressive disorders in workers with burnout, 90% of the subjects identified as burned out met diagnostic criteria for depression. The study also examined the overlap of burnout with the atypical subtype of depression. Features of atypical depression were observed in 63% of the burned-out participants ...

Long noncoding RNAs: A novel prognostic marker in older patients with acute leukemia

2014-12-15
COLUMBUS, Ohio - A new study led by researchers at The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James) describes a novel marker that might help doctors choose the least toxic, most effective treatment for many older patients with acute myeloid leukemia (AML). AML occurs mainly in older patients and has a three-year survival rate of 5 to 15 percent. The researchers investigated patterns of molecules called long noncoding RNAs (lncRNAs), a class of RNA molecules more than 200 ...

LAST 30 PRESS RELEASES:

The Journal of Nuclear Medicine Ahead-of-Print Tip Sheet: May 9, 2025

Stability solution brings unique form of carbon closer to practical application

New research illustrates the relationship between moral outrage on social media and activism

New enzyme capable of cleaving cellulose should revolutionize biofuel production

Krebs von den Lungen-6 as a biomarker for distinguishing between interstitial lung disease and interstitial lung abnormalities based on computed tomography findings

Chimpanzee groups drum with distinct rhythms

Wasp mums use remarkable memory when feeding offspring

Americans’ use of illicit opioids is higher than previously reported

Estimates of illicit opioid use in the U.S.

Effectiveness and safety of RSV vaccine for U.S. adults age 60 or older

Mass General Brigham researchers share tool to improve newborn genetic screening

Can frisky flies save human lives?

Heart rhythm disorder traced to bacterium lurking in our gums

American Society of Plant Biologists names 2025 award recipients

Protecting Iceland’s towns from lava flows – with dirt

Noninvasive intracranial source signal localization and decoding with high spatiotemporal resolution

A smarter way to make sulfones: Using molecular oxygen and a functional catalyst

Self-assembly of a large metal-peptide capsid nanostructure through geometric control

Fatty liver in pregnancy may increase risk of preterm birth

World record for lithium-ion conductors

Researchers map 7,000-year-old genetic mutation that protects against HIV

KIST leads next-generation energy storage technology with development of supercapacitor that overcomes limitations

Urine, not water for efficient production of green hydrogen

Chip-scale polydimethylsiloxane acousto-optic phase modulator boosts higher-resolution plasmonic comb spectroscopy

Blood test for many cancers could potentially thwart progression to late stage in up to half of cases

Women non-smokers still around 50% more likely than men to develop COPD

AI tool uses face photos to estimate biological age and predict cancer outcomes

North Korea’s illegal wildlife trade threatens endangered species

Health care workers, firefighters have increased PFAS levels, study finds

Turning light into usable energy

[Press-News.org] Evidence of Viking/Norse metalworking in Arctic Canada