Natural gas is considered the cleanest of the fossil fuels, the fuels created by plant and animal remains over millions of years.

VOA: special.2009.10.23

James Bartlett said that museums have the right to make decisions about exhibits, even if some art is considered objectionable by critics.

VOA: special.2010.12.15

The average Russian drinks That is more than twice the maximum amount considered healthy by the World Health Organization.

VOA: standard.2009.10.15

"There is the initial definition by the United Nations when they adopted the genocide convention, which is considered generally authoritative.

VOA: standard.2010.03.18

But the shutdown was mandated by the EU, where the Chernobyl-type facility is considered unsafe due to inherent design flaws.

VOA: standard.2010.01.01

Africa,with already severe weather conditions and a poor population largely dependent on subsistence farming, is considered to be the continent most threatened by climate change.

VOA: standard.2009.11.04