In a study of patients entering the hospital for acute stroke, researchers have increased their understanding of an association between certain types of stroke and the presence of the oral bacteria (cnm-positive Streptococcus mutans). 

Strokes are characterized as either ischemic strokes, which involve a blockage of one or more blood vessels supplying the brain, or hemorrhagic strokes, in which blood vessels in the brain rupture, causing bleeding.

A small peptide dubbed TAxI is living up to its name. Recent studies show it to be an effective vehicle for shuttling functional proteins, such as active enzymes, into the spinal cord after a muscle injection.

The findings suggest TAxI holds promise for carrying biologic drugs into this pharmaceutically hard-to-reach location.

Peptides - short chains of amino acid building blocks - can be useful in specific biological jobs. TAxI stands for the work of this particular peptide, Targeted Axonal Import.

Uncloaking the flying saucer movement in the United States could offer historians a snapshot of Cold War attitudes at work in society, as well as insights into how science communication may be tied to current denialism and conspiracy theory movements, according to a Penn State historian.

Scientists, military officials and amateur unidentified flying object investigators -- often called ufologists -- have clashed almost since the start of the modern flying saucer era, which began in 1947 when aviator Kenneth Arnold spotted what he claimed were nine silver flying discs in the Cascade Mountains of Washington, said Greg Eghigian, associate professor of modern history, Penn State.

PHILADELPHIA - Researchers are getting closer to learning how to turn white fat cells into brown fat cells, in a process called "beiging," to bring down blood sugar levels and fight diabetes. The team, led by Joseph Baur, PhD, an assistant professor of Physiology in the Perelman School of Medicine at the University of Pennsylvania published their findings this month in the journal Diabetes.

For the first time astronomers were able to analyse the atmosphere of an exoplanet in the class known as super-Earths. Using data gathered with the NASA/ESA Hubble Space Telescope and new analysis techniques, the exoplanet 55 Cancri e is revealed to have a dry atmosphere without any indications of water vapour. The results, to be published in the Astrophysical Journal, indicate that the atmosphere consists mainly of hydrogen and helium.

The international team, led by scientists from University College London (UCL) in the UK, took observations of the nearby exoplanet 55 Cancri e, a super-Earth with a mass of eight Earth-masses [1]. It is located in the planetary system of 55 Cancri, a star about 40 light-years from Earth.

Western elites may embrace a vegetarian lifestyle but impoverished countries would happily trade places with them. Despite claims like it takes a gallon of gas to create a pound of beef being long debunked, activists continue to promote the notion that a vegetarian lifestyle is better for people and the environment.

Residents of Zambia know the organic, vegetarian lifestyle better than anyone in San Francisco environmental groups, and they have had quite enough. Now economists are catching on as well. A cow, a pair of oxen, or a herd of goats for a poor household dramatically improves their quality of life, finds a recent analysis. 

Cloud top temperatures in storms within Tropical Cyclone Uriah grew colder over the last couple of days, according to infrared imagery from NASA's Aqua satellite. That's an indication of stronger uplift in a tropical cyclone and a stronger storm. NASA-NOAA's Suomi NPP satellite saw the storm when it was struggling against wind shear, and two days later NASA's Aqua satellite saw Uriah reach hurricane-strength after the shear weakened.

• Infants from the U.S. and China looked at the same dynamic scenes

Mothers of children with Autism Spectrum Disorder (ASD) often experience stress and suffer from sleep deprivation. Sacrifices almost always follow as they abandon professional careers and personal ambitions, believing that care for their children "comes first."

But is maternal abandonment of aspirations and interests really beneficial for the ASD child? A new Tel Aviv University study finds that a mother's positive attitude to involvement in everyday activities and a sense of competency in the performance of parental tasks accounts for a significant proportion of her children's successful participation in day-to-day activities.

Though wealthy elites and fad-chasing food activists have promoted the idea that salt is a killer, the science doesn't show that. Instead, links are correlational. Asia has always been held up as a standard for health but as their incidence of hypertension has risen, as many have blamed salt as they have a diet beyond what peasants could afford in the past.