The United States must lead the way. But our best chance to solve these unprecedented problems comes from acting in concert with other nations,".

VOA: standard.2009.04.11

But security and stability have made it possible to begin addressing these problems.

VOA: standard.2009.08.27

Doctors rarely see these conditions. But studies have linked vitamin D deficiency to a number of serious health problems, including heart disease, several types of cancer, osteoporosis,diabetes, Alzheimer's disease and some autoimmune disorders.

VOA: standard.2010.05.28

"And so we're going to be dealing with these short-term problems, but we also have to keep our eye on the horizon and recognize that it's that long-term issue that has to be focused on."

VOA: standard.2010.06.10