Several years later, researchers discovered the exact cause of pellagra: a lack of the B vitamin known as niacin.

VOA: special.2009.01.27

One thing her students discovered is that they liked the same music and activities as many other young people around the world.

VOA: special.2009.11.12

He discovered jazz by listening to the recordings of such jazz greats as Count Basie and Lester Young.

VOA: special.2010.11.07

The antibodies were discovered in a man, known as Donor 45, whose body produced them naturally.

VOA: special.2010.07.14

Usher discovered him. As the rhythm and blues star tells it, when they first met, Justin sang him an Usher song -- and sang it better.

VOA: special.2010.04.30

He says his team chose well known musicians as well as newly discovered bands.

VOA: special.2010.06.25

He started as a serious musician, before he discovered he could make people laugh.

VOA: special.2009.10.11

As he walked, Paul discovered an animal stuck in the snow.

VOA: special.2009.01.24

I didn't quite know where we would be at any given time and I think we discovered this as we went along."

VOA: standard.2010.02.27

It called for flexibility on assembly lines, and mandated that problems be fixed as soon as they were discovered so mistakes would not be repeated.

VOA: standard.2010.02.15

And the other breakthrough we've made is we've actually discovered some molecules which are on the way to being potential drugs for the disease as well."

VOA: standard.2010.04.05