Last month, American scientists began work on a project aimed at improving the ability to predict tornadoes.

VOA: special.2009.06.09

That same year,doctors discovered a deadly brain tumor, which limited his ability to work.

VOA: special.2009.09.13

Gemini would test the men's ability to live and work in space.

VOA: special.2009.06.24

Dehydration limits a person's ability to work and think.

VOA: special.2010.07.27

"This president basically is rolling the dice, he is making the most important decision of his presidency, betting on his ability to work with Pakistan and get this shared problem of the two Talibans under control,".

VOA: standard.2009.12.06

In the rural district of Kitgum in northern Uganda, soldiers are reportedly taking part in medical, dental and engineering projects that not only test their ability to work together, but can assist the local community.

VOA: standard.2009.10.20