The chemicals are joining twelve other substances that are already banned under a treaty known as the Stockholm Convention.

VOA: special.2009.06.23

The National Humanities Center in North Carolina explains on its Web site that the newspaper was banned for three reasons.

VOA: special.2009.04.20

Information in a biological passport can help catch athletes who use banned drugs but find ways to avoid testing positive for them.

VOA: special.2011.04.12

In nineteen seventy-one, he criticized opponents of the insecticide DDT, which was later banned in the United States.

VOA: special.2009.11.10

A Baltimore newspaper first called it that during the nineteen twenties when the manufacture and sale of alcohol were banned for a time.

VOA: special.2009.08.16

The Marine Corps has banned the use of sites like Facebook, MySpace and Twitter on its computers.

VOA: special.2009.09.14

They wanted to set up a government for the United States where slavery would be banned.

VOA: special.2009.11.06

Two years before, the use of the Hawaiian language was banned in private and public schools.

VOA: special.2009.12.02

Congress had banned slavery in those places under the Missouri Compromise Act of Eighteen Twenty.

VOA: special.2009.05.21

But alcohol is banned in first-year dorms -- where most students are under twenty-one anyway.

VOA: special.2009.04.02

All new uses of asbestos were banned in the United States in two thousand seven.

VOA: special.2009.11.17

Eighty percent of the signers have banned the sale of tobacco products to young people.

VOA: special.2010.05.31

Hayes also banned all federal workers from taking part in political organizations, conventions,and campaigns.

VOA: special.2010.03.11

And last July it added Hezbollah's military force to its list of banned organizations.

VOA: special.2009.03.07

And,some of his own team members tried to have him banned from the team.

VOA: special.2009.04.05

In July of 2003 that city banned smoking in public places and workplaces.

VOA: special.2009.01.07

Some have a "zero tolerance" policy where alcohol is banned from all buildings.

VOA: special.2009.04.02

Both countries have banned some forms of media seen as harming national security.

VOA: special.2010.08.06

In nineteen seventy-two, the federal government banned most uses of the insecticide D.D.T.

VOA: special.2009.05.12

It takes place during Prohibition, the period when the United States banned alcohol.

VOA: special.2011.04.25

He was charged with violating a military law that banned such criticism.

VOA: special.2009.10.29

Most sports organizations have banned the non-medical use of anabolic steroids.

VOA: special.2011.04.12