About 90% of workers at the 50 large and medium-size organizations that have done sensor studies with Dr. Waber's firm agree to don the badges, which are intended to be worn the entire workday. (Bathroom breaks are optional.) Those who opt out can wear a dummy badge, which appears identical but doesn't record or transmit data, he says.

WSJ: Tracking Sensors Invade the Workplace

The payroll-tax cut has only been extended for two months, ensuring that the rest of the year will be punctuated with fiscal skirmishes, even as nothing is done to deal with America's medium-term fiscal mess, or to smooth the huge tax hikes and spending cuts that loom at the end of 2012 under current law.

ECONOMIST: The world economy

Grill, turning once, until richly browned and done to your liking, about 2-3 minutes per side for medium.

NPR: A Meal Fit For A Candidate: Barack Obama