"It's so simple. With a two-liter bottle you add sugar, you add extract, you add a small amount of yeast and water, cap it up and in two days they've got root beer.

VOA: special.2011.08.01

It was one man's vision that if just two drops, from a bottle like this one, could prevent children from getting the disease, that global eradication could be within reach.

VOA: standard.2010.08.02