The drug is nevirapine. If it is given within seventy-two hours after birth, it can often protect babies from H.I.V.

VOA: special.2010.05.24

At two hours fifty-six Greenwich Mean Time on July twentieth,nineteen sixty-nine, Neil Armstrong put his foot on the moon.

VOA: special.2009.07.15

They even found a measurable increase in the condition for every two hours sitting in a car.

VOA: special.2009.07.14

He spoke for almost two hours on a cold and rainy day, without a hat or overcoat.

VOA: special.2009.01.19

He said the president had said more in two minutes than he, Everett,had said in two hours.

VOA: special.2009.11.12

He set one by playing poker for seventy-two hours, which was a record for that card game.

VOA: special.2011.05.16

Two hours after Apollo Thirteen went around the moon, the astronauts fired the rocket for five minutes.

VOA: special.2009.07.22

It can take from twenty minutes to more than two hours for them all to leave.

VOA: special.2009.12.07

It is mixed for about two hours with some common chemicals and then allowed to cool.

VOA: special.2011.07.25

Seventy-two hours later, Felix de Weldon had made a small statue of Joe Rosenthal's picture.

VOA: special.2011.05.30

The material and the bacteria were kept warm in an incubator for two hours.

VOA: special.2010.12.07

Two hours after he received the news, Tyler was on his way to Washington.

VOA: special.2009.01.29

It could be two hours a day. It could be seven hours a day.

VOA: special.2009.08.17

This will happen within two hours of breathing in this amount of carbon monoxide.

VOA: special.2010.02.02