But Chad Reissig says scientists do not know a lot about them and how they interact with each other and caffeine.

VOA: special.2009.07.22

And they told them to include two dollars to cover the cost of giving the second letter to the charming widow.

VOA: special.2010.04.24

It took him several weeks to learn how to string the crystals, and how to separate them so they would look nice.

VOA: special.2009.05.18

She remembers Lillian Gilbreth urging the young women to have full lives, with professions if they wanted them.

VOA: special.2009.05.04

People who owned negro slaves wanted to take all their property -- including the slaves -- with them when they moved west.

VOA: special.2009.04.30

The popular story is that rich families in Denver society did not accept them because they had been poor and lacked education.

VOA: special.2010.03.08

"And some of them, they died in the street and the parents don't know where they are.

VOA: special.2010.02.01

Janai Nelson says the two of them learned that they shared the same ideas about raising children.

VOA: special.2011.04.22

"I was really trying to get them into regular schools and they just wouldn't take them, even when I offered to sponsor fees."

VOA: special.2010.05.03

He tried to show them how little he thought of them and the studies they taught.

VOA: special.2009.04.04

Land travelers can look at a mountain,or a river, or an object that shows them where they are in relation to where they came from.

VOA: special.2010.07.14

An open book is before them. They wear the long, full dresses of their day.

VOA: special.2010.04.16

Kenny Broad and his team spent time talking with native Bahamians to ask them if they knew where the team could find other blue holes.

VOA: special.2010.11.10

You will listen to them when they have a problem they need to talk about.

VOA: special.2009.09.13