And NASA is also being called on to develop new technologies to solve problems involved in long-term space flight for humans and robots.

VOA: special.2010.04.28

More studies are needed to know if the gel could work for humans.

VOA: special.2009.03.16

But it is an unnatural color for humans.

VOA: special.2009.11.15

Borman and Lovell proved that humans could survive in space for the time needed to get to the moon and back.

VOA: special.2009.07.01

Most of these are shared among humans as well as mice, rats and other mammals used for comparison in the study.

VOA: special.2009.05.05

Now,Paul Wyatt says a drug based on the research could be ready for testing in humans within eighteen months.

VOA: special.2010.04.07

Studies have shown that over time, most humans need eight to eight and a half hours of sleep for the best health.

VOA: special.2009.08.26

And,Mister Hellsten says, genetic changes are rare for frogs, humans and most organisms.

VOA: special.2010.06.29

Humans have lived in the area of Yosemite for more than 4,000 years.

VOA: special.2009.01.07

They are fighting for equal rights with humans.

VOA: special.2010.01.20

Then,beneath the balloon you have a cabin for the fragile humans."

VOA: standard.2010.06.21

Writer-director Cameron also acknowledges that what the humans try to do on the fictional Pandora is a clear metaphor for what he believes are the dangers of exploitation on our own planet;

VOA: standard.2009.12.19