Doctor Ruhli says researchers used this method to study changes in the tuberculosis bacteria from two thousand year-old mummified tissue.

VOA: special.2010.06.29

But the president did not agree. He said this 2nd bill would also be vetoed unless changes were made in it.

VOA: special.2009.01.29

A published report says the genetic changes could be linked to stress levels during this method of giving birth.

VOA: special.2009.11.24

This way,they can observe changes in the structure of a deadly organism from one generation to the next.

VOA: special.2010.06.29

This week, we will tell about a study linking activity on the sun to changes in Earth's climate.

VOA: special.2009.09.29

They said this was likely a result of the legal drinking age being raised to twenty-one and other policy changes aimed at reducing underage drinking.

VOA: special.2009.08.07

This will help the adobe resist changes in the weather and humidity.

VOA: special.2009.01.12

(VOICE) Scott Smith is Local historian, "how a pest that really caused so much economic hardship, oddly contributed to great changes in agriculture and to the prosperity of this region."

VOA: standard.2010.08.10

Because of the plot, sweeping security changes were brought into the airline industry, including restrictions on carrying liquids on planes that persist to this day that many passengers just have to cope with.

VOA: standard.2009.09.07