But now the first worldwide study warns that one in six of the many different kinds of mangroves could disappear.

VOA: special.2010.04.20

Scientists recently studied the effects of mechanical thinning on two kinds of pecan trees in the southeastern United States.

VOA: special.2009.11.10

I have over one hundred different kinds of birds from all over the United States in my study at home."

VOA: special.2010.04.03

The Park Service says the park has more kinds of flowering plants than any other national park in North America.

VOA: special.2009.09.28

And what about teachers who find these new kinds of mistakes in spelling and grammar in their students' work.

VOA: special.2010.01.28

The goal of the project is to examine in detail how tornadoes are formed and the kinds of damage they cause.

VOA: special.2010.05.11

He has also developed special kinds of paper to help people who work in the art and book industries.

VOA: special.2009.10.02

There are rules that restrict the kinds of jobs that foreign students can have while studying in the United States.

VOA: special.2009.01.15

Four of the five marmosets born as part of the experiment carried the foreign gene in several kinds of tissue.

VOA: special.2009.06.23

More than two-hundred kinds of songbirds also stop in Cape May on their way to Central and South America.

VOA: special.2009.06.01

Claire Wright at the Thomas Jefferson School of Law in San Diego,California,says legal protections do not always cover all kinds of abuse.

VOA: special.2009.02.28

The mutations in these genes can increase the risk for other kinds of cancer, including cancer of the cervix, uterus and pancreas.

VOA: special.2010.09.22

You might say that someone is hedging his bet when he invests in several different kinds of businesses.

VOA: special.2010.01.31

One hundred and fifteen million of them are working in some of the worst kinds of child labor.

VOA: special.2010.05.17