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Researchers looked at states with medical marijuana dispensaries and those that allow home cultivation. They found lower use of opioids, when compared with states where marijuana remains illegal.

Research indicates bed rest does not improve birth outcomes and can be risky for the mom. So why is it still prescribed by many doctors and midwives for about 20 percent of pregnant women in the U.S.?

A recent study revealed the sugar industry's efforts 50 years ago to shape medical opinion on how sugar affects health. But today, scores of companies continue to fund food and nutrition studies.

An email sent to the campaign of former Gov. Phil Bredesen seemed to indicate "unauthorized access to campaign-related information," according to a letter sent to the FBI.

ET-94, which is as tall as a 15-story building, is on a 16-mile trek through Los Angeles on its way to the California Science Center. It's set to be displayed with the space shuttle Endeavor.

Blake Crouch's new science fiction novel tells the story of Jason Dessen, a father and physics professor who suddenly finds himself in a parallel universe — in which he's unmarried and famous.

The country's single biggest source of climate information is the federal government. What happens if a Trump administration tries to censor it?

Privately funded scientists made a virus related to smallpox from scratch, hoping their version might lead to a better smallpox vaccine. But critics question the need — and worry about repercussions.

Nearly all financial indicators suggest Americans are optimistic about the economy. But, it's not clear that it's benefiting President Trump or the Republican Party.

An FDA advisory committee last week urged approval of a drug containing cannabidiol to treat a form of epilepsy. Other scientists wonder if CBD might ease anxiety or other disorders, too.