Far below sea level, they contain some of the harshest environments on Earth, with no oxygen and no light.

VOA: special.2010.11.10

But clearly there is no such thing as a safe level of cigarette smoke exposure.

VOA: special.2009.06.03

in the children." The scientists reported that the risk of the disorder was almost double in children with high levels compared to those with no measurable level.

VOA: special.2010.05.26

He notes that research has found no safe level of lead.

VOA: special.2009.08.31

They held almost no power at the national level.

VOA: special.2010.06.10

Fosatti says he had no idea of the level of poverty that existed outside the developed world.

VOA: standard.2009.11.05

But there was no plan for distributing a pandemic level vaccine in the U.S.or anywhere.

VOA: standard.2010.04.29

The report says there has been no change in the extremely poor level of respect for religious freedom in North Korea,where some of the as many as 200,000 people held in political prison camps are reportedly there for religious reasons.

VOA: standard.2009.10.26

"He wants to have a thorough discussion with the president and the rest of the national security team about whether that does remain the best way to pursue our enemies in Afghanistan, and ultimately bring a level of peace and security there, so that it no longer poses a threat to us,"

VOA: standard.2009.10.01