But a drop in oxygen levels can cause a health emergency in people with heart or lung problems.

VOA: special.2009.07.14

"Are there people in the world with the foolishness to die because leaves drop off a vine?

VOA: special.2009.08.01

Drop several seeds over the surface of the pot and cover with a thin layer of vermiculite, a substance that can hold air, water and nutrients.

VOA: special.2009.04.21

"I don't really do a whole lot. I normally just spend time with family, go out to eat,hang out, wait for the ball to drop on TV."

VOA: special.2009.12.28

Drop the seeds over the surface and cover them lightly with soil.

VOA: special.2009.04.28

The runway is built on a flat stretch of land on a hill, with a sheer drop on both sides.

VOA: standard.2010.05.23

But many experts say Mr.Saakashvili's drop in popularity over the years indicates a strong disillusionment with the achievements of the Rose Revolution.

VOA: standard.2009.09.01

With competition, experts expect prices to drop, making smartphones much more accessible to consumers around the world.

VOA: standard.2010.06.25

News of the widening trade gap, along with several other gloomy economic reports, contributed to a 2.5 - percent drop in the Dow Jones Industrial Average on Wednesday.

VOA: standard.2010.08.11

Family members rush to take advantage of every precious drop before the afternoon, filling plastic jugs,oil drums, and pails with water for use by the 15 people who live in this home.

VOA: standard.2009.08.01

Last week saw positive U.S.economic news, with increases in home sales and housing prices, a jump in manufacturing activity, a drop in new jobless claims, and a new growth figure showing the economy shrinking far less than had been anticipated.

VOA: standard.2009.08.02