Making a simple substitution of water or diet soft drinks for drinks with calories can help people lose 4 to 5 pounds, a new University of North Carolina at Chapel Hill study shows.

Federal regulators formally approved the merger of the nation's only two satellite radio operators Friday, ending a 16- month-long drama closely watched by Washington and Wall Street.

U.S. regulators approved a merger Friday night between XM Satellite Radio and Sirius Satellite Radio.

Sirius Satellite Radio Inc. and XM Satellite Radio Holdings Inc. may get a green light on their merger if they pay about $20 million in fines, sources said.

Federal Communications Commissioner Jonathan Adelstein, a fierce critic of government policies that allow big media companies to get bigger, made a surprising move when he put forth a proposal that would allow the nation's only two satellite radio companies to merge.