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The Nobel Prize in medicine was awarded Monday to three scientists for their work on parasitic diseases.

William C. Campbell and Satoshi Omura were recognized for discovering a compound that effectively kills roundworm parasites. A Chinese scientist, Dr. Youyou Tu, won for her work in isolating a powerful drug in the 1970s to fight malaria.

Updated at 9:15 p.m. ET.

California Gov. Jerry Brown signed landmark legislation Monday, allowing terminally ill patients to obtain lethal medication to end their lives when and where they choose.

In a deeply personal note, Brown said he read opposition materials carefully, but in the end was left to reflect on what he would want in the face of his own death.

In many countries, the decisions teens make at 15 can determine the rest of their lives. But, often, girls don't have much say — parents, culture and tradition decide for them. In a new series, #15Girls, NPR explores the lives of 15-year-old girls who are seeking to take control and change their fate. Warning: Some of the depictions and images in this story are graphic.

There's good news from the front lines in the fight against bullying: anti-bullying laws can help reduce aggression, both online and in real life.

Bullying affects one out of every five U.S. high school students. But anti-bullying laws do make a difference, researchers reported Monday in JAMA Pediatrics – especially when those laws comply with guidelines from the U.S. Department of Education.

In ancient China, black rice was considered so superior and rare, it was reserved exclusively for the emperor and royalty. These days the grain, also known as forbidden rice, has become the darling of gourmets and people seeking superior nutrition.

As health insurance open season heats up for businesses, many employees will discover that participating in their company's wellness program includes rolling up their sleeves for blood tests.

Across the country, half of large employers offering health benefits have wellness programs that ask workers to submit to medical tests, often dubbed "biometrics," that can involve a trip to a doctor's office, lab or workplace health fair.

The medicines they helped develop are credited with improving the lives of millions. And now three researchers working in the U.S., Japan and China have won the 2015 Nobel Prize in Physiology or Medicine. Among the winners: William C. Campbell of Drew University in Madison, N.J., for his work on the roundworm parasite.

Women concerned about their fertility can use a test to help decide whether they should freeze their eggs now or whether they still have time to have a baby.

If your company hasn't launched a wellness program, this might be the year.

As benefits enrollment for 2016 approaches, more employers than ever are expected to nudge workers toward plans that screen them for risks, monitor their activity and encourage them to take the right pills, food and exercise.