It says salt in the American diet has increased fifty percent since the nineteen seventies, while blood pressures have also risen.

VOA: special.2010.01.27

Johnny Cash imagines the many historical events the American flag has seen and experienced since the founding of the United States.

VOA: special.2010.07.02

Since the nineteen forties, the traditional place for political speech by American unions and companies has been through political action committees.

VOA: special.2010.03.12

Varroa mites have been causing serious problems in bee colonies in the United States since the late nineteen eighties.

VOA: special.2009.09.22

It was the first reported drop in American cancer cases and deaths since the nation began collecting such information.

VOA: special.2009.01.13

Since the anti-trust law had been passed in eighteen ninety, few companies had been found guilty of violating it.

VOA: special.2010.08.05

Major measures of United States markets have closed with their biggest one-day losses since the financial crisis of two thousand eight.

VOA: special.2011.08.12

The United States has lost almost seven million jobs since the recession began in December of two thousand seven.

VOA: special.2009.08.20

It has been about forty years since the United States Food and Drug Administration approved a drug especially for treating lupus.

VOA: special.2010.06.15

The memorial honors all members of the United States Marine Corps who died in battle since the American Revolution.

VOA: special.2010.05.31

Researchers have known since the nineteen thirties that the actively growing tip of a plant releases a hormone called auxin.

VOA: special.2009.10.13

I knew that he had been lying awake ever since the first noise, when he had turned in the bed.

VOA: special.2009.05.16

Ben Bernanke led the central bank through extraordinary efforts to contain the worst economic crisis since the nineteen thirties.

VOA: special.2009.08.28

The chimps are among a group that Jane Goodall and her team have been studying since the nineteen sixties.

VOA: special.2009.09.08