This can help a worker keep his nose clean or stay out of trouble.

VOA: special.2009.09.13

Bad weather has interfered with efforts to send out boats to clean up the oil and watch for the effects on wildlife in the Gulf of Mexico.

VOA: special.2010.05.04

And last June,says Sittenfeld, the House passed the American Clean Energy and Security Act, the first bill out of either chamber of Congress to directly take on the challenge of global warming.

VOA: standard.2010.02.25

National and state governments around the world have been trying out various incentives and subsidies to promote clean renewable energy but the global economic slowdown has hurt the ability of many governments to dole out public funds.

VOA: standard.2010.03.23