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Neanderthal demise due to many influences, including cultural changes

As an ice age crept upon them thousands of years ago, Neanderthals and modern human ancestors expanded their territory ranges across Asia and Europe to adapt to the changing environment.

Evolution | Source: Arizona State University | Views: 78 | Comments: 0
Redder ladybirds more deadly, say scientists

A ladybird's colour indicates how well-fed and how toxic it is, according to an international team of scientists. Research led by the Universities of Exeter and Liverpool directly shows that differences between animals' warning signals reveal how poisonous individuals are to predators.

Evolution | Source: University of Exeter | Views: 75 | Comments: 0
Our Amorphophallus is smaller

The famed "corpse flower" plant – known for its giant size, rotten-meat odor and phallic shape – has a new, smaller relative: A University of Utah botanist discovered a new species of Amorphophallus that is one-fourth as tall but just as stinky.

Plant Biology | Source: University of Utah | Views: 72 | Comments: 0
Invasive alien predator causes rapid declines of European ladybirds

A new study provides compelling evidence that the arrival of the invasive non-native harlequin ladybird to mainland Europe and subsequent spread has led to a rapid decline in historically-widespread species of ladybird in Britain, Belgium and Switzerland.

Ecology | Source: Centre for Ecology & Hydrology | Views: 94 | Comments: 0
Researchers uncover a mechanism to explain dune field patterns

In a study of the harsh but beautiful White Sands National Monument in New Mexico, University of Pennsylvania researchers have uncovered a unifying mechanism to explain dune patterns. The new work represents a contribution to basic science, but the findings may also hold implications for identifying when dune landscapes like those in Nebraska's Sand Hills may reach a "tipping point

Geology | Source: University of Pennsylvania | Views: 125 | Comments: 0
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Researchers uncover a mechanism to explain dune field patterns

In a study of the harsh but beautiful White Sands National Monument in New Mexico, University of Pennsylvania researchers have uncovered a unifying mechanism to explain dune patterns. The new work represents a contribution to basic science, but the findings may also hold implications for identifying when dune landscapes like those in Nebraska's Sand Hills may reach a "tipping point

Geology | Source: University of Pennsylvania | Views: 125 | Comments: 0
School closures slow spread of pH1N1

Closing elementary and secondary schools can help slow the spread of infectious disease and should be considered as a control measure during pandemic outbreaks, according to a McMaster University led study.

Epidemiology | Source: McMaster University | Views: 126 | Comments: 0
Domestic cats, and wild bobcats and pumas, living in same area have same diseases

Domestic cats, wild bobcats and pumas that live in the same area share the same diseases. And domestic cats may bring them into human homes, according to results of a study of what happens when big and small cats cross paths.

Epidemiology | Source: National Science Foundation | Views: 122 | Comments: 0
3 'targeted' cancer drugs raise risk of fatal side effects

Treatment with three relatively new "targeted" cancer drugs has been linked to a slightly elevated chance of fatal side effects, according to a new analysis led by scientists at Dana-Farber Cancer Institute. They added that the risk remains low, but should be taken into account by physicians and patients.

Cancer | Source: Dana-Farber Cancer Institute | Views: 126 | Comments: 0
Smoking associated with more rapid cognitive decline in men

Smoking in men appears to be associated with more rapid cognitive decline, according to a report published Online First by Archives of General Psychiatry, one of the JAMA/Archives journals.

Neuroscience | Source: JAMA and Archives Journals | Views: 119 | Comments: 0
Survey of elementary school student access to food in vending machines, snack bars, other venues

About half of all public and private elementary school students could buy food in one or more competitive venues on campus (vending machines, school stores, snack bars or a la carte lines) by the 2009-2010 school year and sugary foods were available to almost all students with access to these options, according to a report published in the February issue of Archives of Pediatrics & Adole

Health | Source: JAMA and Archives Journals | Views: 95 | Comments: 0
Whole-genome sequencing of 2011 E. coli outbreaks in Europe provides new insight

Using whole-genome sequencing, a team led by researchers from Harvard School of Public Health (HSPH) and the Broad Institute has traced the path of the E. coli outbreak that sickened thousands and killed over 50 people in Germany in summer 2011 and also caused a smaller outbreak in France. It is one of the first uses of genome sequencing to study the dynamics of a food-borne ou

Genetics | Source: Harvard School of Public Health | Views: 73 | Comments: 0
A bug's (sex) life: Diving beetles offer unexpected clues about sexual selection

Studying female reproductive tracts and sperm in diving beetles (Dytiscidae), researchers from the University of Arizona and Syracuse University have obtained a glimpse into a bizarre and amazing world of sperm that can take on a variety of forms – including joining together into conglomerates that navigate the twisted mazes of the female reproductive tract.

Evolution | Source: University of Arizona | Views: 58 | Comments: 0
Copper + love chemical = big sulfur stink

When Hiroaki Matsunami, Ph.D., at Duke set out to study a chemical in male mouse urine called MTMT that attracts female mice, he didn't think he would stumble into a new field of study.

Chemistry | Source: Duke University Medical Center | Views: 59 | Comments: 0
Video: Fossil cricket reveals Jurassic love song

Some 165 million years ago, the world was host to a diversity of sounds. Primitive bushcrickets and croaking amphibians were among the first animals to produce loud sounds by stridulation (rubbing certain body parts together). Modern-day bushcrickets – also known as katydids – produce mating calls by rubbing a row of teeth on one wing against a plectrum on the other wing but how their primitive

Evolution | Source: University of Bristol | Views: 75 | Comments: 0
Tasting fructose with the pancreas

Taste receptors on the tongue help us distinguish between safe food and food that's spoiled or toxic. But taste receptors are now being found in other organs, too. In a study published online the week of February 6 by the Proceedings of the National Academy of Sciences of the USA, researchers at Sanford-Burnham Medical Research Institute (Sanford-Burnham) d

Molecular Biology | Source: Sanford-Burnham Medical Research Institute | Views: 79 | Comments: 0
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