The phone detects the kind of lighting in use at the user's location-such as fluorescent, incandescent, and natural lighting-and automatically adjusts the screen's color balance to the optimal setting.

ENGADGET: blogger-avatar

There has been a lot of research about the optimal duration in a health-care setting, such as a hospital.

WSJ: Hand-Washing Techniques for Good Health

Others argue that in a system that has an income tax, the estate tax will always be less efficient than setting the income tax at optimal rates.

ECONOMIST: Death and taxes

In addition to the advanced functions that will satisfy experienced photographers, the LUMIX GH2 is easy enough for beginners to use comfortably because of Panasonic's iA (Intelligent Auto) mode, a popular setting in the LUMIX point-and-shoots that automatically engages features and settings for optimal image quality by detecting the shooting environment.

ENGADGET: Panasonic's $900 Lumix GH2 officially debuts: 16MP, 1080p movie mode, 3D interchangeable lens