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

The report included suggestions for young people,adults, disabled persons and those with long-term health problems.

VOA: special.2010.06.08

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

Over the past few decades,however, scientists have determined that even trace amounts of lead in children's bodies leads to long-term neurological and behavioral problems.

VOA: standard.2009.12.19

"None of these savings by themselves are going to solve our long-term fiscal problems.

VOA: standard.2009.04.20

First growth,though. Without growth you cannot fix those long-term fiscal problems,".

VOA: standard.2009.11.01

"Senator Mitchell and the president are deeply engaged with the Israelis and the Palestinians in trying to address the larger issues of peace and security and to create a long-term solution to the range of problems there.

VOA: standard.2009.10.03

"But we also have to recognize that if markets are skittish and don't have confidence that we can tackle the tough problems of our medium- and long-term debt and deficits,then that also is going to undermine our recovery."

VOA: standard.2010.06.27