Mark Moasser, MD, has sorted out why HER2, the protein driving 1 in 5 breast cancers, is so hard to drug. He explains how the findings correct a naive way of envisioning how HER2 is shaped and how it works.

When women's health researchers analyzed Medi-Cal data to see how two long-term contraceptives performed in the real world, they were surprised to find IUDs work at least as well as tubal ligation, while causing fewer side effects.

In medical school, Nathan Lo thought we could do more to help the 750 million people around the world with or at risk of getting schistosomiasis. This week, he helped World Health Organization rewrite guidelines to treat everyone in affected communities.