But the secretary also said senior officials are aware that past efforts have failed, and he said it is not clear whether the view in Tehran has changed.

VOA: standard.2009.05.05

The researchers say if people want to avoid heart disease, they should be more aware of how much sugar is in their food, and reduce it,if need be.

VOA: standard.2010.04.25

While many developing-world communities might not be ready for Hunt's runoff management model, Urbonas believes it is important for them to be aware of the pollutants present in stormwater even as they learn to manage their community's waste water.

VOA: standard.2010.08.04