An airplane had flown over the area where the birds were kept and spread a powerful chemical called DDT.

VOA: special.2010.03.14

But they continue to debate the early evidence of music because few archeological objects exist to prove how music developed and spread.

VOA: special.2009.08.18

Smithson wanted his money to be given to the United States to start an organization in Washington designed to increase and spread knowledge.

VOA: special.2010.10.22

Historically,analysts say, government efforts to suppress protest and reform have only fueled and spread the fires of change.

VOA: standard.2010.06.11

So they pin up posters on election commission sponsored bulletin boards and spread their message by megaphones.

VOA: standard.2009.07.27

What began in Germany and spread to France and Italy has now moved to Britain.

VOA: standard.2009.05.18

The technology is helping public health services collect information to follow the spread of diseases and to better organize their work.

VOA: special.2010.05.03

The virus was identified in Uganda in two thousand four and has spread fast in areas extending from Lake Victoria.

VOA: special.2010.06.08

In the past,the W.H.O.and experts with America's Centers for Disease Control and Prevention noted guidance for disease spread on airplanes.

VOA: special.2009.07.14

The crisis in Greece has threatened to spread to other countries and has led to protests and violence over spending cuts.

VOA: special.2010.05.14

Earlier findings showed that happiness, obesity and the ability to stop smoking can also spread like infections within social groups.

VOA: special.2010.01.06

One is the long-distance transport of bees for pollination and the spread of bee diseases from one area to another.

VOA: special.2011.05.24

They noted that the grass can absorb and control the spread of harmful wastewaters, like those from pig farms.

VOA: special.2010.02.09

Untreated patients can spread the bacteria from their nose and mouth through the air to people who are near them a lot.

VOA: special.2009.10.14