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

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

VOA: special.2009.09.30

Russia's Pavlovsk Experimental Station houses one of the oldest seed and plant collections in the world.

VOA: special.2010.08.24