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Attending a high school with a high number of teachers with graduate training was the clearest predictor of the impact of school quality on late-life cognition, researchers found.

At the award ceremony, the nation's top infectious disease expert spoke about his decades-long effort to end the HIV/AIDS crisis (see video in the article).

Columbia's Jocelyn Brown is among a small number of American pediatricians trained to evaluate potential child-abuse cases, with the goal of protecting the child.

A Columbia cardiologist explains everything you want to know about your heart and how to keep it healthy.