The experiment showed that was not a safe way to protect people the bite of an infected mosquito from yellow fever.

VOA: special.2009.01.27

Its aim is to guide the country's environmental policies and future laws to protect natural resources and ensure safe economic development.

VOA: special.2010.04.21

The process was repeated every day and night until the escaped slave was safe in New England or even Canada.

VOA: special.2009.04.16

And the dymaxion car -- which could have provided safe, pollution-free transportation using little gasoline -- was never produced.

VOA: special.2010.05.30

Scientists say an experimental vaccine reduced the risk of infection in human beings by thirty-one percent and was safe.

VOA: special.2009.10.13

Cleveland warned that it would be far better to make safe,careful, and intelligent changes in the tariff laws now.

VOA: special.2010.05.20

If several of these conditions are present at the same time, a person's body temperature may rise above safe levels.

VOA: special.2010.07.27

The Barbary States, as they were known, demanded payment for the release of hostages and safe passage of American ships.

VOA: special.2009.05.27

"Honestly I feel quite confident that actually volunteers have never been as safe in the Peace Corps as they are today.

VOA: special.2011.03.28

But,to be on the safe side, he also places a smaller bet on the other team, to reduce a possible loss.

VOA: special.2010.01.31

The future owners of the houses work together with different building designers to create environmentally safe houses that do not pollute.

VOA: special.2009.03.25

The most important weapon against carbon monoxide poisoning is the safe use of materials to heat any enclosed area.

VOA: special.2010.02.02

The experiment showed that the bite of an infected mosquito was not a safe way to protect people from yellow fever.

VOA: special.2010.05.18

Ewell Smith from the Louisiana Seafood Promotion and Marketing Board says seafood from the unaffected area is safe to eat.

VOA: special.2010.05.04