Dementia refers to a decline in cognitive functions like memory and reasoning. Alzheimer’s, the most common type, is marked by a progressive decline in memory, language, and thought. Symptoms of ...

One sparks a revolution, while the other structures a nation. Do you know the difference between the Declaration of Independence and the Constitution? Packed with history and visionary ideas (and even ...

National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...