Many so-called greenhouse gases, such as carbon dioxide, come from burning fossil fuel such as oil or coal.

VOA: standard.2009.12.16

For example, there may be a correlation between maternal mortality and Caesarean births, or so-called "C-Sections."

VOA: standard.2010.06.23

A three-judge panel in Ethiopia handed down sentences to 39 men and one woman in the so-called Ginbot Seven, or May 15 conspiracy case.

VOA: standard.2009.12.23

Last year alone, colleges and universities across the country created more than 100 major or minor programs in energy,sustainability, environmental studies and other so-called green subjects.

VOA: standard.2010.04.22

The so-called Red Shirts, led by the United Democratic Front against Dictatorship,or UDD, have the backing of the main parliamentary opposition group, the Puea Thai Party.

VOA: standard.2010.03.20

Of course,the biggest difference between the two bills, and one likely to cause the most friction in House-Senate negotiations, involves the so-called "public option" or competing insurance the government would offer.

VOA: standard.2009.12.25