New statistics show Americans are waiting longer to get married, but a majority will tie the knot at some point in their life.

The Centers for Disease Control and Prevention finds more than eight in ten men and 86% of women will be married by the time they're 40.

The study found women tend to marry younger than men. It also found African American men and women are less likely to be married at age 35 than Caucasian men and women.

Past studies have shown people who are married tend to have better physical, emotional and economic well-being.

In other health news, from vaccinations and flu shots to cutting edge surgical techniques, medical research has made the world a healthier, safer place to live. However, few people participate in research studies.

Experts say a shift in public thinking could help get the involvement needed to quicken the pace of these breakthroughs.

In an article featured this week in the Journal of the American Medical Association, experts say medical research is actually a "public good" that everyone benefits from. They say it requires everyone's participation.

An estimated 16 million more people are needed annually for biomedical research.

And, a group of Japanese researchers say they've developed a wheelchair that can be driven by signals from the user's brainwaves.

The researchers say with practice the user can tell the chair to move forward, right or left just by thinking about it.

According to the developers, a driver can achieve a 95% accuracy rate with their commands if they practice for three hours a day for a week.

They hope to one day develop a system that can respond to more complicated commands than simple directions.