Linda Scelza has not heard her son Ryder’s voice in 75 days. Ryder Scelza, 20, has gone silent due to the effects of four ...

also called a CAT scan (computerized axial tomography). It was especially useful for looking at head injuries and brain problems, because it showed about 100 times greater detail in soft tissues ...

Brain teasers like this one challenge your logical reasoning and critical thinking while honing your ability to focus on ...