Experts say his work during the outbreak helped stop the Ebola virus from spreading out of control.

VOA: special.2009.01.27

In the summer months, the terrible desert heat slowed the work but did not stop it.

VOA: special.2009.08.12

And,it does not seem that hard work will stop them.

VOA: special.2010.07.13

Volpp says incentive programs to help people stop smoking seem to work better than those focused on losing weight.

VOA: standard.2010.07.16

"One should work on this and stop sleeping." Russia has also suffered a serious brain drain since 1991, the report says.

VOA: standard.2010.02.03

In the Czech Republic, the president said he laid out a strategy to work with Russia and other nations to stop the proliferation of nuclear weapons.

VOA: standard.2009.04.11

I will not stop fighting for an economy where hard work is rewarded,".

VOA: standard.2010.01.22

But a majority don't think it is going to work in terms of being able to stop terrorists there from using Afghanistan as a terrorist base to do terrorists acts against the United States."

VOA: standard.2009.10.09

"He is an imam and I am a rabbi and we are both simply teachers humble before God,' "Hopefully,helping others to stop along the way, so that we can find out how strong we really are when we simply work together."

VOA: standard.2009.10.19