Naming expert Cleveland Evans explains that many of these names were traditionally female or male at one time or another.

VOA: special.2009.07.06

The researchers say many, if not all,people likely have these antibodies but do not always produce or use them efficiently.

VOA: special.2009.03.04

But these days, whatever new jobs are written into movies or TV shows, some images of mothers are timeless.

VOA: special.2009.05.04

Because the canyon's environments are so different, these species did not spread beyond the canyon, or even far within it.

VOA: special.2009.10.07

These lines,or circles,are parallel -- meaning that they are equally distant from each other at any point around the world.

VOA: special.2010.07.14

They say many people die or are injured by the gas because they do not use these devices correctly.

VOA: special.2010.02.02

One of these is deep-six. It means to hide something or put it where it will not be found.

VOA: special.2009.05.24

But these may not develop for two or three days after an overdose too late to prevent damage.

VOA: special.2009.07.08

These medication mistakes included the accidental overdose of a drug or the wrong drug being given or taken.

VOA: special.2010.06.16

"And the box was open and there were probably about five or six of these little round, yummy-smelling warm doughnuts in there.

VOA: special.2010.04.12

It contains forms of hydrogen and oxygen that can mark, or label, these elements within body water.

VOA: special.2011.07.27

These were reports about how foreign students could attend a college or university in the United States.

VOA: special.2009.12.31

These include the stress of injury or of seeing an expedition partner become injured or even die.

VOA: special.2010.02.24

These include pregnant women and people who live with or care for children younger than six months.

VOA: special.2009.08.18