We all get into arguments about the insignificant details of past events—the who, what, when, and where. Which sibling started that fight? What flowers did he bring on your first date? How old were ...

Think about the last time you studied for an exam. You probably read your notes, went through textbooks, maybe even watched a few videos. Yet, when the paper was placed before you, your mind went ...

Editor’s note: The podcast Chasing Life With Dr. Sanjay Gupta explores the medical science behind some of life’s mysteries big and small. You can listen to episodes here. (CNN) — Most of us are ...