A five-month federal investigation of the so-called flash crash suggested a single big trade may have been the cause.

VOA: special.2010.12.31

These urge local officials to balance to risk of flu in their communities with the problems that school dismissals could cause.

VOA: special.2009.08.13

The Centers for Disease Control says HEPA filters are effective in clearing the air of many particles that cause disease.

VOA: special.2009.07.14

And they list a cause of death. Useful information might also be found in local court and tax records.

VOA: special.2010.06.28

The goal of the project is to examine in detail how tornadoes are formed and the kinds of damage they cause.

VOA: special.2010.05.11

The study found that hopeful individuals were fourteen percent less likely than other women to have died from any cause.

VOA: special.2009.04.15

The researchers disagree with the World Health Organization which says blindness and other vision problems are the leading cause.

VOA: special.2009.12.28

Plate tectonics is the area of science that explains why the surface of the Earth changes and how those changes cause earthquakes.

VOA: special.2010.01.12

The two researchers closely studied the records that listed errors involving medicines as the main cause of death.

VOA: special.2010.07.13

The exact cause is unknown. But in a recent study, an experimental drug showed signs of halting the disorder in laboratory mice.

VOA: special.2010.05.19

It can also cause flooding. Wind speeds in a category two hurricane can reach close to one hundred eighty kilometers an hour.

VOA: special.2010.08.24

And the announcement a month later of a non-aggression treaty between Germany and the Soviet Union gave Tokyo even more cause for concern.

VOA: special.2011.05.26

Still,broken bones should be treated quickly because they can restrict blood flow or cause nerve damage.

VOA: special.2009.02.04

So Jeff took her to the city and put her in a hotel far enough from Jeff and Andy's place to cause no suspicion.

VOA: special.2010.04.24