Millions of people across the Midwest and Northeast are breathing dangerous air this week as heavy smoke from wildfires in Canada and Minnesota spreads across the region.

Minnesota officials issued an air quality alert running Tuesday through Friday for areas including the Twin Cities metro area, Alexandria and Two Harbors, according to th... Full Page

A simple blood test may accurately predict a person's risk of developing Alzheimer's symptoms up to a decade before they begin.

The test looks for an Alzheimer's biomarker called p-tau217.

"This is a critical step toward better understanding what p-tau217 can tell us about a person’s risk for cognitive impairment," said lead au... Full Page

Artificial intelligence simulations of the dead are already a reality. 

Services like HereAfterAI, Project December and Séance AI are converting the deceased's photos, text messages and other data into digital "ghosts" for loved ones to commune with.

Is the technology a helpful aid to assuage the grief of those left ... Full Page

Third-graders who often act out during a school day may be at higher risk of falling behind academically in high school and beyond, a new study finds.

Impulsive, sometimes disruptive youngsters may be setting a pattern for poor performance in school for decades to come, conclude a team led by Andrew Koepp. He's assistant professor of appli... Full Page

Compared to healthier patients, people who suffer heart attacks tend to have higher concentrations of microplastics in their blood, a small new study has found.

In other studies, the tiny plastic particles — ubiquitous in modern environments — have been detected in organs and tissues throughout the body, researchers said in bac... Full Page

Agitation is a common and tough-to-control symptom of late-stage dementia. But a new trial suggests that a combination of two active ingredients in marijuana may help ease patients' agitation.

The specially formulated medication contains purified tetrahydrocannabinol (THC) and cannabidiol (CBD), given by mouth in an oil that's rapidly dige... Full Page