They say their findings show that even low levels of smoke may cause behavior problems in children with asthma or others at risk.

VOA: special.2009.01.13

The exploration vehicle will be able to measure methane even at very low levels in many places on the surface.

VOA: special.2009.12.30

Yet in the south,for example, support for the protesters is low even among the poor.

VOA: special.2010.05.22

And Henry Ford was planning a low-cost version which even more people could buy.

VOA: special.2010.08.05

An investigation showed that leading members of Congress, and even the Vice President, received shares of ownership in the company for free, or at low cost.

VOA: special.2010.02.25

Low levels of vitamin D are even associated with high blood pressure.

VOA: standard.2010.05.28