Here is how they work: Cows are trained to follow a series of paths that lead to milking stations.

VOA: special.2009.05.12

Main message? Each one of us makes a difference every single day we impact the world around us and if we would just think about the consequences of the little choices we make what we eat,wear,buy, how we interact with people,animals, the environment then we start making small changes and that can lead to the huge change that we must have."

VOA: special.2009.11.18

The spirit of trying to wrest from nature the facts of how it operates, wherever they may lead."

VOA: standard.2009.11.25

"If we keep defining our happiness through how much we consume it's going to lead to tragic end,"

VOA: standard.2010.01.23

The scientists say if their work is confirmed, it could lead to further research on how lifestyle choices figure in the prevention and treatment of age-related decline and diseases such as Alzheimer's.

VOA: standard.2009.12.30