"The ambiguity that's in those answers is very,very difficult for humans to understand, never mind a computer to understand.

VOA: special.2011.02.28

They believe the simian immunodeficiency virus,S.I.V., probably crossed from chimpanzees to humans in the last one hundred years.

VOA: special.2009.09.08

Mars Day offered Allison and Alysia's children a chance to learn more about a world that humans may set foot on within their lifetimes.

VOA: special.2010.07.28

She has read the book four times. "I think if anything, this story talks about humanity and the universality of humans and how there's goodness in people and you just have to get to know one another."

VOA: special.2010.07.08

The Mars-500 mission at Moscow's Institute of Biomedical Problems will test the psychological and physical effects of long-term isolation on humans.

VOA: standard.2010.06.02