Experts say demand in Asia especially Vietnam and China currently drives most trade in rhino horns from southern Africa.

VOA: special.2009.12.14

But a government program that paid Americans to trade in old vehicles for new, fuel-saving models increased car sales in the summer.

VOA: special.2010.01.01

Clay said there was equal justice in his resolutions ending the slave trade in the District of Columbia and strengthening laws on the return of runaway slaves.

VOA: special.2009.03.19

In "Sharkwater," Rob Stewart uncovers the illegal shark fin trade in Costa Rica.

VOA: special.2009.04.03

It would not continue the slave trade in the District of Columbia.

VOA: special.2009.03.19

It ended the slave trade in the District of Columbia.

VOA: special.2009.04.02

And here is at least part of the reason why: Since late July the government has been paying for people to trade in older vehicles for newer ones with greater fuel economy.

VOA: special.2009.08.07

The proposal would declare bluefin tuna so endangered that a ban on international trade in the fish is required.

VOA: standard.2010.03.04

It also creates a huge disincentive for those who want to export or trade in illegal wood products.

VOA: standard.2010.05.28

In order to participate in the plan, car buyers like Georgie need to trade in a car that is at least 10-years old.

VOA: standard.2009.05.18

Thornton says the new amendment to the Lacey Act is a wake-up call for anyone who wants to trade in the lucrative U.S.wood products market.

VOA: standard.2010.05.28

Campaigners say it has helped to shine a spotlight on the violent consequences of the trade in illicit diamonds - a spotlight they hope will remain even after the celebrities have left.

VOA: standard.2010.08.09

In the United States, a vote in Congress is expected in the coming weeks that could authorize up to $4,500 to individuals who trade in vehicles in what has become known as the "cash for clunkers" bill.

VOA: standard.2009.05.18

The buildings in the exhibit include the World Trade Center in New York that was destroyed in the terrorist attacks;

VOA: special.2010.07.30