Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Xavier Lorenzo / GettyImages If you're looking for a loan, finding the most affordable ...

Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...

The heart is a pump, and the blood goes round, and round, and round all the time. And why does it do that? Why can't it just have a rest? Well, the blood has to be kept moving around all the time ...

The visual system is the part of the central nervous system that is required for visual perception – receiving, processing and interpreting visual information to build a representation of the visual ...

Attention deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder most frequently diagnosed in children. According to the Centers for Disease Control and Prevention (CDC), ADHD ...

The skeleton allows movement, provides support and protection for vital organs and makes blood cells. Skeletal muscles move the bones in the body. The skeletal system is made from bones and joints.