Ann Arbor: With more kids online and using cell phones at increasingly younger ages, two issues have quickly climbed higher on the public’s list of major health concerns for children across the US: sexting and Internet safety.

Birmingham: A drive to find out why the United States has the highest rates of treatable sexually transmitted diseases in the developed world has been the career focus of one University of Alabama at Birmingham infectious disease expert.

Washington: Having friends who suffer from depression doesn’t affect the mental health of others, according to research led by the University of Warwick.

Washington: Violent video game play is linked to increased aggression in players but insufficient evidence exists about whether the link extends to criminal violence or delinquency, according to a new American Psychological Association task force report.

Toronto: The practice of sexting may be more common than generally thought among adults. More than eight out of 10 people surveyed online admitted to sexting in the prior year, according to research presented at the American Psychological Association’s 123rd Annual Convention.

Washington: Counties in the United States with more beautiful weather and scenery have lower rates of membership and affiliation with religious organizations, according to a Baylor University study.