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Think of a stereotypical salesperson and you're likely to conjure up someone who's extraverted, gregarious, and assertive. But a new study reveals that "ambiverts," people who are neither introverted nor extraverted but who fall somewhere in between, tend to be the most effective salespeople.

The study is published in Psychological Science, a journal of the Association for Psychological Science.

The great age of the embryos is unusual because almost all known dinosaur embryos are from the Cretaceous Period. The Cretaceous ended some 125 million years after the bones at the Lufeng site were buried and fossilized.

Led by University of Toronto Mississauga paleontologist Robert Reisz, an international team of scientists from Canada, Taiwan, the People's Republic of China, Australia, and Germany excavated and analyzed over 200 bones from individuals at different stages of embryonic development.

Hunter-gatherers living in glacial conditions produced pots for cooking fish, according to the findings of a pioneering new study led by the University of York which reports the earliest direct evidence for the use of ceramic vessels.

Scientists from the UK, the Netherlands, Sweden and Japan carried out chemical analysis of food residues in pottery up to 15,000 years old from the late glacial period, the oldest pottery so far investigated. It is the first study to directly address the often posed question "why humans made pots?" The research is published in Nature.

A research team of Inserm, CNRS and MDC lead by Michael Sieweke of the Centre d'Immunologie de Marseille Luminy (CNRS, INSERM, Aix Marseille Université) and Max Delbrück Centre for Molecular Medicine, Berlin-Buch, today revealed an unexpected role for hematopoietic stem cells: they do not merely ensure the continuous renewal of our blood cells; in emergencies they are capable of producing white blood cells "on demand" that help the body deal with inflammation or infection.

MAYWOOD, Il. – The economic crash in Cuba following the fall of the Soviet Union has provided researchers with a unique natural experiment on obesity, diabetes and heart disease.

In the early 1990s, shortages of food and gasoline forced Cubans to eat less and do more walking and cycling. Adults lost, on average, 9 to 11 pounds, and type 2 diabetes and cardiovascular disease dropped sharply.

• Exit-screening at 36 airports would have assessed all air travelers at risk of transporting H1N1 out of Mexico at start of 2009 pandemic
• Screening at 99 per cent of the world's international airports could have been forgone with negligible missed opportunities to prevent or delay the spread of disease
• Screening at just eight airports worldwide would have led to the assessment of 90 per cent of all at-risk air travelers

New Orleans, LA – New discoveries by a team of scientists at LSU Health Sciences Center New Orleans for the first time reveal the inner workings of a master regulator that controls functions as diverse as the ability of nerve cells to "rewire" themselves in response to external stimuli and the mechanism by which certain viruses hijack normal cellular processes to facilitate their replication that can ultimately lead to cancer. The research will be published in the April 12, 2013 issue of the Journal of Biological Chemistry.

As if trapped in a never-ending B movie about evil invaders, Cincinnatians have been tormented by a six-legged scourge for years. To the chagrin of many throughout the Queen City, this monster isn't an actor in a rubber alien costume; it's the real thing – Cimex lectularius, better known as the common bed bug.

The tiny, bloodsucking arthropods have burrowed so deeply and so broadly into the cracks, crevices and cushions of Greater Cincinnati's households, they've literally given the city an itch it can't scratch enough to make it go away.

COLUMBIA, Mo. ¬— With nearly one billion users worldwide, Facebook has become a daily activity for hundreds of millions of people. Because so many people engage with the website daily, researchers are interested in how emotionally involved Facebook users become with the social networking site and the precursors that lead to Facebook connections with other people. Russell Clayton, now a doctoral student at the University of Missouri School of Journalism, found that anxiety and alcohol use significantly predict emotional connectedness to Facebook.

ROCHESTER, Minn. -- Translating a Mayo Clinic stem-cell discovery, an international team has demonstrated that therapy with cardiopoietic (cardiogenically-instructed) or "smart" stem cells can improve heart health for people suffering from heart failure. This is the first application in patients of lineage-guided stem cells for targeted regeneration of a failing organ, paving the way to development of next generation regenerative medicine solutions. Results of the clinical trial appear online of the Journal of the American College of Cardiology.

CHAPEL HILL, N.C. – Researchers at the University of North Carolina at Chapel Hill School of Medicine have "rationally rewired" some of the cell's smallest components to create proteins that can be switched on or off by command. These "protein switches" can be used to interrogate the inner workings of each cell, helping scientists uncover the molecular mechanisms of human health and disease.

CORVALLIS, Ore. – A laboratory study has shown for the first time that coenzyme Q10 offsets the cellular changes that are linked to a side-effect of some statin drugs - an increased risk of adult-onset diabetes.

Statins are some of the most widely prescribed drugs in the world, able to reduce LDL, or "bad" cholesterol levels, and the risk of heart attacks or other cardiovascular events. However, their role in raising the risk of diabetes has only been observed and studied in recent years.

The obesity epidemic in America and its impact on musculoskeletal health, as well as related treatment outcomes and costs, was discussed during the AAOS Now forum, "Obesity, Orthopaedics and Outcomes," at the 2013 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS) at McCormick Place in Chicago.

Researchers at the University of the Basque Country (UPV/EHU) and the Achucarro neurosciences centre have discovered a new therapy for the fragile X chromosome syndrome. This new therapy proposes the modulation of the cerebral endocannabinoid system in order to ameliorate the symptoms of the disease.

SAN ANTONIO (April 10, 2013) — Baby marmoset monkeys that began eating solid food earlier than their peers were significantly more likely to be obese at 1 year of age, scientists at The University of Texas Health Science Center San Antonio and the Smithsonian Conservation Biology Institute found.

This early life obesity resulted in metabolic damage such as insulin resistance and poor blood sugar control, a companion study showed.