There are some patients for whom physicians are really on the fence about whether to give one therapy or another.

VOA: special.2009.07.15

"We have no choice," he said, "as to whether or not we will play a great part in the world.

VOA: special.2010.08.12

However it was unclear to researchers whether unemployment caused poor health, or whether poor health led to job loss.

VOA: special.2009.06.09

There should be some sense by the end of the year,he says, whether or not serious progress is being made.

VOA: special.2009.05.23

Experts are not sure whether this tribe placed bodies in caves as part of burial ceremonies or for other reasons.

VOA: special.2010.11.10

And,that it applies universally, it doesnt matter what ones faith is, it doesnt matter whether its a man or a woman.

VOA: special.2010.02.24

Parents of children age ten to seventeen were asked whether their child bullies or is cruel or mean to others.

VOA: special.2010.05.06

And they will study whether it is involving in controlling sleep quantity alone, or also what scientists call the "wakefulness-behavioral drive."

VOA: special.2009.08.26

Whether grown naturally or through technology, people who love orchids say they are the most beautiful flowers on Earth.

VOA: special.2010.04.06

Genes direct the making of proteins which do much of the work in building an organism, whether a person or a potato.

VOA: special.2009.11.03

There is a debate about whether or not swimming burns as many calories as other forms of exercise.

VOA: special.2010.06.08

So you know throw those two together and I'll come running to check this out regardless of whether she cares or not."

VOA: special.2010.07.30

"I want a grandchild.I'll be seventy in July, and I just -- whether they get married or not, I want a grandchild."

VOA: special.2011.05.23

The pilots are paid less, and there are questions about whether they get enough training or rest.

VOA: special.2009.06.13