It is well known that stress can make it harder to concentrate. Math problems, for example, are more difficult when a person is stressed out. Until recently, researchers were not sure why.

Most people have heard the idea, and many subscribe to it - that people's eyes move a certain way when they are being untruthful. This idea of a shifty-eyed liar is culturally engrained, even visible in cartoons and movies when lying is being portrayed onscreen.

The mind-body connection has interested people for centuries with more and more research showing that the two are completely connected.

The beeps, the zooms, the revs, the lumbering semis… Living near a busy highway often means little peace and quiet. But constant annoying traffic noise can affect health too.

Did you Instagram your run today? Or tweet about your walk? Most of the time spent on Facebook and other networking sites could be taking away from your cardio or 30-minute yoga class.

Experiencing violence as a child raises the risk of health problems later in life. A new study is trying to understand why this risk is higher.

Were you glued to the TV in the days after 9/11? If you found it hard to tear yourself away from the grim, upsetting images, they might have had a long-term impact on your health.

They say you can never go home again. But thousands of veterans do, and it's not easy. But that can be a good thing.

The damage has only just begun. After Hurricane Isaac struck the coast this week, the destruction may also be hidden in the children.