This extra heat can raise temperatures in cities by about one to three degrees Celsius compared to rural areas.

VOA: special.2010.03.02

NASA warned the three astronauts inside about one hour before the object was to reach the area of the station.

VOA: special.2009.04.01

This has led to greater use of monovalent vaccines to protect against either type one or type three polio.

VOA: special.2010.01.18

At the age of thirty-three, he became one of the youngest doctors in the United States to hold that position.

VOA: special.2009.09.04

The event normally brings about three million Muslims from one hundred sixty countries to the city of Mecca.

VOA: special.2009.11.24

Today,the Special Olympics has grown to include about three million athletes in more than one hundred fifty countries.

VOA: special.2009.08.23

However,the cooling of about one and one-half to three degrees Celsius is only about half as strong as a real La Nina.

VOA: special.2009.09.29

A nineteen ninety-three movie called "Tombstone" is one of the most recent attempts to tell this story.

VOA: special.2010.02.15

In one group,the infected man or woman began to take a combination of three antiretroviral drugs immediately after being found to have HIV.

VOA: special.2011.05.18

In one study,infected mothers began to take three anti-H.I.V.drugs while breastfeeding for up to six months.

VOA: special.2009.07.29

Twelve thousand parts per million of the gas will cause death in one to three minutes.

VOA: special.2010.02.02

"There's evidence that that return on investment is somewhere between three and six to one.

VOA: special.2011.02.28

And college women twenty-one to twenty-three had bigger increases than non-students in that age group.

VOA: special.2009.08.07

The Earth takes twenty-four hours to complete one full turn or revolution of three-hundred-sixty degrees.

VOA: special.2010.07.14