Body

Uranium-series dating reveals Iberian paintings are Europe's oldest cave art

The practice of cave art in Europe thus began up to 10,000 years earlier than previously thought, indicating the paintings were created either by the first anatomically modern humans in Europe or, perhaps, by Neanderthals.

Fifty paintings in 11 caves in Northern Spain, including the UNESCO World Heritage sites of Altamira, El Castillo and Tito Bustillo, were dated by a team of UK, Spanish and Portuguese researchers led by Dr Alistair Pike of the University of Bristol, UK.

Grasshoppers 'stressed' by spiders affect the productivity of our soil

Jerusalem, June 14, 2012 – How do grasshoppers who are being frightened by spiders affect our ecosystem? In no small measure, say researchers at the Hebrew University of Jerusalem and at Yale University in the US.

A grasshopper who is in fear of an attacker, such as a spider, will enter a situation of stress and will consume a greater quantity of carbohydrate-rich plants – similar to humans under stress who might eat more sweets.

How aging normal cells fuels tumor growth and metastasis

PHILADELPHIA—It has long been known that cancer is a disease of aging, but a molecular link between the two has remained elusive.

Now, researchers at the Kimmel Cancer Center at Jefferson (KCC) have shown that senescence (aging cells which lose their ability to divide) and autophagy (self-eating or self-cannibalism) in the surrounding normal cells of a tumor are essentially two sides of the same coin, acting as "food" to fuel cancer cell growth and metastasis.

Environmental factors spread obesity, CCNY-led team reports

An international team of researchers' study of the spatial patterns of the spread of obesity suggests America's bulging waistlines may have more to do with collective behavior than genetics or individual choices. The team, led by City College of New York physicist Hernán Makse, found correlations between the epidemic's geography and food marketing and distribution patterns.

Atomic-resolution view of a receptor reveals how stomach bacterium avoids acid

EUGENE, Ore. -- (June 14, 2012) -- University of Oregon scientists have discovered how the bacterium Helicobacter pylori navigates through the acidic stomach, opening up new possibilities to inactivate its disease-causing ability without using current strategies that often fail or are discontinued because of side effects.

Quirky fruit fly gene could point way to new cancer drugs

MAYWOOD, Il. -- Loyola University Chicago researchers are taking advantage of a quirk in the evolution of fruit fly genes to help develop new weapons against cancer.

A newly discovered fruit fly gene is a simplified counterpart of two complex human genes that play important roles in the development of cancer and some birth defects. As this fruit fly gene evolved, it split in two. This split has made it easier to study, and the resulting insights could prove useful in developing new cancer drugs.

Fragile X gene's prevalence suggests broader health risk

MADISON – The first U.S. population prevalence study of mutations in the gene that causes fragile X syndrome, the most common inherited form of intellectual disability, suggests the mutation in the gene – and its associated health risks – may be more common than previously believed.

Scientists sequence genome of human relative that prefers love over war

COLUMBUS, Ohio – An international team of scientists has sequenced the genome of the bonobo, a primate that, along with chimpanzees, is the closest living relative of humans. Unlike chimpanzees, which have an aggressive nature, bonobos tend to be peaceful, playful and highly sexual.

The study, published online in the journal Nature, compares the bonobo genome to the genomes of chimpanzees and humans.

New discovery closes in on genetic link between Alzheimer's and diabetes

BETHESDA, MD – June 14, 2012 -- A new spin to our understanding of the relationship between Alzheimer's disease and diabetes, which could point to a therapeutic target for both diseases, is published in a research report in the June 2012 issue of the journal Genetics.

New report estimates nearly 18 million cancer survivors in the US by 2022

ATLANTA – June 14, 2012 – The number of Americans with a history of cancer, currently estimated to be 13.7 million, will grow to almost 18 million by 2022, according to a first-ever report by the American Cancer Society in collaboration with the National Cancer Institute (NCI). The report, Cancer Treatment and Survivorship Facts and Figures, and accompanying journal article published in CA: A Cancer Journal for Clinicians, used data from the NCI-funded Surveillance, Epidemiology, and End Results (SEER) Program to generate brand new estimates of cancer survivor prevalence in the U.S.

Gene may link diabetes and Alzheimer's, CCNY researchers find

In recent years it became clear that people with diabetes face an ominous prospect – a far greater risk of developing Alzheimer's disease. Now researchers at The City College of New York (CCNY) have shed light on one reason why. Biology Professor Chris Li and her colleagues have discovered that a single gene forms a common link between the two diseases.

Sexual minority women are often victims of abuse

Adult lesbian and bisexual women are more likely to report childhood abuse and adult sexual assault than heterosexual women, according to a new study by Dr. Keren Lehavot from the VA Puget Sound Health Care System in Seattle, USA and her collaborators. Furthermore, the researchers' work shows that women who are more butch report more abuse in childhood, particularly physical and emotional neglect, while women who identify as femme, and have a more feminine appearance, report more adult sexual assaults. The work is published online in Springer's journal, Sex Roles.

Study shows pollution levels in some kitchens are higher than city-center hotspots

Researchers from the University of Sheffield's Faculty of Engineering measured air quality inside and outside three residential buildings with different types of energy use (gas vs. electric cookers). They found that nitrogen dioxide (NO2) levels in the kitchen of the city-centre flat with a gas cooker were three times higher than the concentrations measured outside the property and well above those recommended in UK Indoor Air Quality Guidance (1). These findings are published online in Journal of Indoor and Built Environment (2).

New action for ancient heart drug

An ancient heart drug that's inspired the work of herbalists and poets for centuries may treat a condition that plagues millions of overstressed and overweight Americans today.

Since the 13th century, the herb Foxglove has been used to cleanse wounds and its dried leaves were brewed by Native Americans to treat leg swelling caused by heart problems.

Warm climate -- cold Arctic?

To address the question about how climate may develop in the future, earth scientists direct their attention to the past. They look for epochs with similar conditions to today. The major identified climatic processes are then simulated with numerical models to further test possible reactions of the Earths' system. An epoch which is often regarded suitable for such an undertaking is the Eemian warm period, which began around 125,000 years ago following the Saalian ice age.