Do anti-vaccine people hang around with anti-vaccine people or did hanging around with them cause them to lose faith in science?

There are an alarming number of factors that all correlate with anti-vaccine sentiment; the types of food purchased, beliefs about science, beliefs about energy, and beliefs about politics. But did all of those happen, and the people who embraced them gravitated toward each other, or did the social circle create the issue?

Irvine, Calif., Aug. 29, 2016 - As a multiyear drought grinds on in the Southwestern United States, many wonder about the impact of global climate change on more frequent and longer dry spells. As humans emit more carbon dioxide into the atmosphere, how will water supply for people, farms, and forests be affected?

A new study from the University of California, Irvine and the University of Washington shows that water conserved by plants under high CO2 conditions compensates for much of the effect of warmer temperatures, retaining more water on land than predicted in commonly used drought assessments.

DALLAS, Aug. 29, 2016 -- Food fortified with folic acid, a B vitamin required in human diets for numerous biological functions, was associated with reduced rates of congenital heart defects, according to new research in the American Heart Association's journal Circulation.

"Our study examined the effect of folic acid food fortification on each specific subtype of congenital heart disease based on the Canadian experience before and after food fortification was made mandatory in 1998," said K.S. Joseph, M.D., Ph.D., the study's senior author and professor in the Department of Obstetrics and Gynecology and the School of Population and Public Health at the University of British Columbia in Vancouver, Canada.

The number of cardiovascular drugs in the research pipeline has declined across all phases of development in the last 20 years even as cardiovascular disease has become the number one cause of death world-wide, according to research published today in JACC: Basic to Translational Science.

While the development and use of new prescription drugs have been associated with significant reduction in cardiovascular mortality over the past two decades, cardiovascular disease is still the leading cause of death in the developing world and accounts for 1 in 3 deaths in the United States. There has been growing concern over the decline in the development of new therapies.

NEW YORK, NY (August 29, 2016)-- New findings suggest that most Americans with depression receive no treatment, while raising the possibility that overtreatment of depression is also widespread. Less than a third of American adults who screened positive for depression received treatment for their symptoms, whereas over two-thirds of adults receiving treatment for depression did not report symptoms of depression or serious psychological distress, according to a study from Columbia University Medical Center (CUMC) and the University of Pennsylvania.

The study also found that among those who are treated for depression, less than half of those with severe psychological distress are seen by a mental health specialist.

Even if we find it difficult to calculate complicated probabilities on the spot, our brains constantly carry out these sorts of computations without our awareness -- and they're remarkably good at it.