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Microorganisms play a vital role in growing food and sustaining the planet, but they do it anonymously. Scientists haven't identified most soil microbes, but they are learning which are most common.

A comparison of brain tissue from monkeys, chimps and humans suggests that our brains produce the chemical messenger dopamine, which plays a major role in pleasure and rewards, far differently.

As a kid, Cedric Habiyaremye used to go hungry living in a refugee camp. Now, he's an aspiring plant scientist hoping to bring nutrient-rich crops to his country.

President Trump should appoint a senior envoy, backed by a strong interagency team, to represent him in talks with the North Korean government.

A plant called kratom is banned in San Diego, and the DEA is considering banning it nationwide. Some San Diegans say it has medicinal benefits.

Nonopioid treatments for common conditions that leave people in chronic pain fare as well as opioid treatments and have fewer risks and side effects.

In a program called OB Nest, The Mayo Clinic has been using a telemedicine program that allows low-risk expectant mothers to forgo some standard prenatal visits.

Parents have to weigh a lot of factors in deciding whether their kid should get a sick day. But day care centers may make the decision for you — and their rules are not always evidence based.

The president has banned U.S. aid to any health organization in another country that performs or promotes abortion. Kenya's oldest provider of reproductive health services has already lost funding.

A new study shows students' self-image suffers in middle school and junior high. And it's not just hard on low-income kids. Having a teacher who understands the teenage brain can help.