Unipolar depression is a mental health condition that involves a low, sad, or hopeless mood. The term “unipolar,” which comes from the roots “uni” (one) and “polar” (end), means you have symptoms from ...

If you’ve been a good little hacker and have been tearing apart old printers like you’re supposed to, you’ve probably run across more than a few stepper motors. These motors come in a variety of ...

Sometimes it takes a crisis to dispense with intellectual fads. The world’s response to Libya has made clear that currently fashionable arguments about the “rise of the Rest” and the world’s new ...

The American Century is fading. At least, that is the consensus among most analysts of international politics. Whether they attribute U.S. decline to domestic dysfunction or to the rise of China and ...

The defeat of Nazi Germany and the Empire of Japan in World War II ushered in the Cold War era. For the four and a half decades between the defeat of fascism and the collapse of communism, global ...

Mania is is a mood state characterized by an elevated/euphoric, expansive, or unusually irritable mood lasting for at least one week and that is not the result of substance use. The irritability can ...

Richard N. Haass is president of the Council on Foreign Relations and the author of "The Opportunity: America's Moment to Alter History's Course" (PublicAffairs, 2005). Two seemingly unrelated events ...

President Vladimir Putin holds a press conference, at the end of his visit to China on Wednesday. Russian President Vladimir Putin on Wednesday (local time) advocated for the end of a "unipolar world" ...