The exact type of stimulation that an individual uses is not as important as being intellectually engaged."

VOA: standard.2010.06.17

When you are out in nature it is important to speak softly so as not to frighten the animals away.

VOA: special.2009.08.19

"One of the absolutely key, most important variables as to whether or not a forest survives and continues is whether local people monitor each other and its use.

VOA: special.2009.10.16