Sen. James Lankford, R-Okla., writes that Washington is not America's problem, but a reflection of America's problems. Ben Curtis / AP No one likes to look in the mirror early in the morning. But each ...

Several users have reported problems downloading the latest release of Parallels Desktop (2.5.3186.0), the virtualization environment that allows running of Windows applications alongside Mac OS X on ...

Learn how concave mirrors form images with a clear, step-by-step explanation that makes the mirror equation easy to understand. This lesson covers ray diagrams, focal length, image position, and ...