The study found that more than one-third of the pictures in women's magazines showed babies in unsafe sleep positions.

VOA: special.2009.08.26

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

The study says mangrove trees provide more than one and a half billion dollars worth of services to ecological systems worldwide.

VOA: special.2010.04.20

Ellen Yeh from the Stanford University School of Medicine in California was one of the authors of the study.

VOA: special.2009.08.03

A study found that those snacks add up to almost one-third of all the daily calories eaten by children.

VOA: special.2010.03.17

Last week, a study was released about a new treatment that combines five medicines for heart disease in one pill.

VOA: special.2009.04.08

The study found there is strong support for restricting work by doctors-in-training to sixteen or fewer hours at one time.

VOA: special.2010.07.13

The study linked almost one in every five such deaths in two thousand eight to the virus that causes AIDS.

VOA: special.2010.04.14

One study of agencies that list women seeking husbands found there were around ten thousand "mail-order marriages" a year.

VOA: special.2011.02.14

The study found that the patients' risk of suffering a fall was higher for up to one hour after emotional stress.

VOA: special.2009.03.24

A study in the United States found that eighty-four percent of undergraduates last year had at least one credit card.

VOA: special.2009.05.28

The study also found that more than one-quarter of American adults have left the religion in which they were raised.

VOA: special.2010.03.05

Their study considers painting sixty-three percent of rooftops white in one hundred large cities in warm areas around the world.

VOA: special.2009.06.19

But one of the authors of the study, Tim McClanahan from the Wildlife Conservation Society, says fisheries in Africa face another threat.

VOA: special.2009.08.11