The life expectancy is much longer today than it was when Social Security was created.

Obesity among young Americans is a serious problem that can have serious ramifications in the long run.

Our brave soldiers and support personnel are engaged in a battle as important as any the United States has ever before waged, for the success of democracy in Iraq is a crucial test of the ideals this Nation was founded upon.

I like the idea of giving workers control and putting their money into their personal accounts.

Adult stem cells tend not to form tumors.

Fool me once, shame on you. Fool me twice, shame on you.

A stem cell is essentially a blank cell capable of becoming another, more differentiated cell-type in the body, such as a skin cell, a muscle cell or a nerve cell.