Tornadoes form when winds blowing in different directions meet in the cloud and begin to turn in circles.

VOA: special.2009.06.09

Tornadoes form when winds blowing in different directions meet in the clouds and begin to turn in circles.

VOA: special.2010.05.11

And before long,he says, winds carried the disease from Kenya to Ethiopia.

VOA: special.2009.08.18

As the countdown to the game winds down, South Africa is gripped by World Cup fever.

VOA: standard.2010.05.29

"I think we're going to get the upper level winds carrying that ash down for a few more days yet until the upper wind patterns change which will probably not happen until the time frame Thursday-Saturday.

VOA: standard.2010.04.17

In the spring and summer,he says, he would expect the prevailing winds in Western Europe to come from the West or Southwest - which would mean that the ash would be pushed towards the Arctic or Siberia.

VOA: standard.2010.04.16