The World Health Organization currently recommends that patients begin taking AIDS medicines, called antiretroviral drugs, when symptoms appear or when their CD4 count drops below 200.

VOA: standard.2010.07.21

"History shows us that when nations fail to cooperate or when turn away from one another, when they turn inward, the price for our people only grows,"

VOA: standard.2009.04.01

The secretary general would not say when the transition might start, how long it will take, or when it might be possible to start reducing the NATO troop commitment.

VOA: standard.2009.10.23

"Either once they have left their country and are on route, or when they have actually arrived in the country of destination, that their passports are taken way, they are locked up and then they are forced into prostitution,"

VOA: standard.2009.08.21

Frictions between Islam and the West often flare up - like when when a Danish newspaper published cartoons of the Prophet Mohammed - or when Muslim girls in Europe went to school wearing veils, or new minarets in Switzerland were banned.

VOA: standard.2010.03.18

When melting snow crystals or raindrops fall through very cold air, they freeze to form small particles of ice,called sleet.

VOA: special.2010.01.05

Non-native English speakers take the test to demonstrate their English skills when seeking a new job or a promotion.

VOA: special.2010.02.18

"We found that there's no real difference in device infection or device malfunction when you compare it to new pacemaker implantation."

VOA: special.2010.06.02

The court can try people for genocide, war crimes and crimes against humanity when their own countries are unwilling or unable to.

VOA: special.2010.06.21

When they were tired or wanted to be held they cried out in tiny voices and reached up with their little arms.

VOA: special.2009.02.28

Plant expert Doug Welsh says when you prune a rosebush, crape myrtle or shade tree, first remove dead, broken or diseased parts.

VOA: special.2009.10.06

Clay becomes very hard when it is put in a fire or a special oven called a kiln.

VOA: special.2009.01.12

An exception is when a jury is asked to recommend either execution or life in prison in murder cases punishable by death.

VOA: special.2009.08.31

Girls are advised to begin testing within three years of when they first have sex, or in any case no later than twenty-one.

VOA: special.2009.11.25