National park ranger Dan Kiger says oil poses a special risk to mangroves and sea grass, for example.

VOA: standard.2010.07.05

Meanwhile,Mr.Obama's political supporters are launching a grass-roots effort to win public support for his economic policies.

VOA: standard.2009.03.16

Farmers can start rotational grazing by removing animals from a pasture when the grass is eaten to less than five centimeters.

VOA: special.2010.01.19

Farmers can start rotational grazing by removing animals from a pasture when the grass is eaten to less than 5 centimeters.

VOA: special.2009.01.06

The streets and walks and grass and buildings of the university seemed to me a Hollywood version of a college.

VOA: special.2010.01.30

It can provide thick green grass without the work or wait required to grow a lawn from seed.

VOA: special.2009.07.07

Within a few years, there was not enough grass for all the cattle, especially along the trails.

VOA: special.2010.03.18

I found myself lying on a bed of yellow colored grass that covered the land for kilometers.

VOA: special.2010.07.10

They believed a better way to the railroad could be found, with plenty of grass and water.

VOA: special.2010.03.18

If finer materials are used, such as cut grass, the depth should be two and a half to seven and a half centimeters.

VOA: special.2009.06.30

In the nineteen-forties, Marjory Stoneman Douglas wrote a book called, "The Everglades: River of Grass."

VOA: special.2010.09.21

A piece of sod has grass on the top and soil on the bottom.

VOA: special.2009.07.07

Pollen is a fine dust that comes from grass, trees and flowers.

VOA: special.2009.07.28

Whitman writes about grass as a sign of everlasting life.

VOA: special.2009.04.12

But others want a traditional grass lawn.

VOA: special.2009.07.07

Spartinas are a kind of saltmarsh grass.

VOA: special.2009.10.06

A child said, What is the grass?

VOA: special.2009.04.12

There are no gravestones or grand mausoleums - just a patch of bare grass surrounded by a simple wooden fence.

VOA: standard.2010.07.22

"Yes sir,it is," "It is very personal. These organizing groups have given people, normal grass roots people,a voice.

VOA: standard.2009.07.31

That smells wonderful. And 'cause I was a gozillionaire and I liked doing it so much, I cut that grass for free.

VOA: standard.other

"Fatah stands at a point where it will continue to organize the process of defending the holy sites through popular effort and grass-roots mobilization,".

VOA: standard.2009.10.05

Renowned South African trumpeter, wowed the crowd with a rendition of Grazing in the Grass.

VOA: standard.2010.06.11

The Tea Party movement is not a political party, but a loose grouping of conservative grass roots activists who oppose the health care bill and taxes and who want to reduce the power of the federal government.

VOA: standard.2010.03.28