It also causes bad side effects, some of which can be deadly.

VOA: special.2010.01.04

The standard flu vaccine causes the body to produces antibodies, which target parts of the virus that frequently mutate.

VOA: standard.2010.07.21

But this plan has also come under criticism. The proposed power plants will burn heavy oil, which must be imported and causes pollution.

VOA: standard.2009.08.28

Smith says American academicians and journalists often cite a list of root causes for Middle East turmoil, in which the U.S., the West and Israel usually play a big part: a history of colonialism and economic exploitation, the creation of Israel and American support for the Jewish state, the politics of oil, Western backing of repressive Arab regimes and the U.S.military presence in the region.

VOA: standard.2010.03.18