Some scientists now believe that tension headaches may result from changes among brain chemicals such as serotonin.

VOA: special.2010.03.30

Some scientists have called Jupiter the protector of the inner planets and our own Earth -- from objects from the outer solar system.

VOA: special.2009.08.25

Some scientists believe that the Clovis people died off because they killed too many native animals.

VOA: special.2009.01.20

However,some scientists say such a campaign is an experiment with the health of millions of people.

VOA: special.2010.03.03

For example, some scientists hope to use stem cells to replace tissues damaged by disease.

VOA: special.2009.04.14

For example,some scientists hope to use stem cells to replace tissues damaged by disease.

VOA: special.2010.06.15

Some scientists say the amount of tenofovir in the gel may be too low.

VOA: special.2010.07.21

Some scientists are studying whether drugs that block the enzyme can help fight cancer.

VOA: special.2009.10.07

Some scientists support the idea of historical protection for the remaining objects.

VOA: special.2010.03.02

Some scientists say a weakened ability to identify smells may be involved.

VOA: special.2009.09.15

However,some scientists question the numbers behind the science of white roofing.

VOA: special.2009.06.19

Some scientists,however,do not believe the evidence for warming.

VOA: special.2010.01.19

Some scientists say climate change makes this worse.

VOA: special.2009.05.05

Some scientists have criticized aquaculture.

VOA: special.2011.02.08

Some scientists have said the government should cancel large sporting events and close schools to try to stop the spread of the respiratory disease.

VOA: standard.2009.05.30

Aid groups say 23 million people face starvation in East Africa because of a relentless drought some scientists say may be a result of climate change.

VOA: standard.2009.11.04

Their campaign has led some scientists to give up GM research and others to call for the British government to carry out trials at secure or secret sites.

VOA: standard.2009.10.21

A long-standing drought, along with recent devastating bushfires and widespread floods have given some scientists more reason to think that the vast continent is likely to be one of the countries hardest hit by a shifting climate.

VOA: standard.2009.05.03

At the same time,though, the two scientists found that the protein can also support the growth of cancer in some cells.

VOA: special.2010.05.18

Scientists know that some of the Bristlecone pines in northern California are also more than four thousand years old.

VOA: special.2009.05.12

At the same time, though, the two scientists found that the protein can also support the growth of cancer in some cells.

VOA: special.2009.01.27

Today we tell about female scientists around the world and some of the problems they face.

VOA: special.2009.05.13

Some of the professionals who examine evidence gathered during criminal investigations are called forensic scientists.

VOA: special.2010.05.05

Not everyone would agree. Some people might be considered more intelligent than rocket scientists.

VOA: special.2010.06.27

He said scientists removed the head and some backbones from the shark for examination.

VOA: special.2009.06.16