Mister Boas believed that the environment people grow up in -- not family genes caused most cultural differences among people.

VOA: special.2010.01.17

The investigators say they found no evidence that the university's scientists cheated to prove the existence of human-caused climate change.

VOA: special.2010.04.27

However it was unclear to researchers whether unemployment caused poor health, or whether poor health led to job loss.

VOA: special.2009.06.09

One day, the insects' love of sweets caused them to attack a ship that was bringing sugar to the camp.

VOA: special.2009.01.24

But he said it was too early to say what caused the April twentieth explosion on the Deepwater Horizon drilling rig.

VOA: special.2010.06.19

"Rinderpest affected Africa, Asia and Europe for millennia and caused widespread famine and decimated millions of animals, both domestic and wild."

VOA: special.2010.11.02

She says this monument is a quiet place for people to come to terms with loss caused by the war.

VOA: special.2009.05.06

The navigator also had to add any movement of the ship to the side caused by waves or the wind.

VOA: special.2009.12.23

The answer to the problem caused a little trouble for my father,I imagine, but it was perfect in my opinion.

VOA: special.2010.01.30

"The trouble in the street was caused by a man who had almost been run over by a horse and carriage.

VOA: special.2009.12.26

He said the darkening of the Martian surface during some times of the year was caused by the growth of plants.

VOA: special.2010.07.11

Some scientists say the earthquake that caused the great tsunami of two thousand four measured nine points in intensity.

VOA: special.2009.03.17

The dog caused Mister Grogan a lot of trouble, but also provided many stories for his newspaper articles.

VOA: special.2009.02.23

The researchers say each plant-eater that became trapped caused many meat-eaters to come to the place to feed.

VOA: special.2010.04.07