As a result, they used the frogs in fast-acting, low-cost pregnancy tests for women during the nineteen-forties and fifties.

VOA: special.2010.06.29

His education law,still in effect, required states to show yearly progress in student learning as measured by the states' own tests.

VOA: special.2010.07.22

But not all tests for life in outer space take place far away, and not all involve the search for liquids.

VOA: special.2010.05.25

The tests are the first step in human clinical trials of two vaccine candidates developed at the University of Cape Town.

VOA: special.2009.07.29

In two thousand two the group had suggested such screening tests every one to two years for women forty and older.

VOA: special.2009.11.18

He says international tests show that the United States is performing twenty-fifth out of thirty developed countries in science education.

VOA: special.2009.10.15

This process involves several tests before a person can receive a visa to stay in the United States for the training period.

VOA: special.2009.06.02

South Africa launched the tests last week as the International AIDS Society held a conference in Cape Town.

VOA: special.2009.07.29

The team found levels of lead as high as thirty-two thousand parts per million in tests on some paint samples from Ecuador.

VOA: special.2009.08.31

Professor Rauschecker says large parts of the visual cortex became active during the sound and touch tests, but only in the blind people.

VOA: special.2010.10.13

The case involved tests that the city of New Haven,Connecticut, gave to firefighters in two thousand three.

VOA: special.2009.07.03

Medical examiners did an autopsy on Friday, but tests for drugs in the body normally take weeks.

VOA: special.2009.06.27

Scientists at the University of Oklahoma are performing genetic tests at the Molecular Anthropology Laboratories in Norman,Oklahoma.

VOA: special.2011.01.18

He says current tests can sometimes take weeks in rural and poor areas of the world.

VOA: special.2009.03.25

And,in fact, if we added in taking notes and doing tests in class, most of the writing done in school is done by hand."

VOA: special.2009.10.29

They say that some states have lowered their standards in order to increase student scores on tests required by the No Child Left Behind Act.

VOA: special.2010.03.25

That name would go away. The current policy calls for every student to be ableto pass state tests in reading and math by two thousand fourteen.

VOA: special.2010.03.18

The first involves sheep. Researchers have found that hair sheep are a good source of blood for use in tests to diagnose infectious diseases in people.

VOA: special.2009.08.03

Then two laboratories in the United States and Britain did radiocarbon tests.

VOA: special.2010.08.03