Scientist Cecil Lewis said the human DNA could have been there because people had had contact with the bone.

VOA: special.2011.03.15

But later he chose surgery, because it lets him have more time to decide how to help his patients.

VOA: special.2009.06.02

Bryan explained that he had to travel, because the Democratic Party did not have enough money to campaign in other ways.

VOA: special.2010.07.01

The proposal was a surprise because the two companies have been on opposite sides of the debate over net neutrality.

VOA: special.2010.08.20

She says it will improve understanding of other crops because potatoes have been linked to tomatoes,peppers and eggplants.

VOA: special.2009.11.03

Many first time visitors recognize it because artists have been painting the beauty of Taos Pueblo for years.

VOA: special.2010.07.05

His granddaughter Anna Canoni says that was partly because he did not have enough money to record more.

VOA: special.2009.07.27

Some animals such as the black rhinoceros have almost been destroyed because poachers illegally hunt and kill them.

VOA: special.2009.08.19

Madam C.J.Walker explained it this way: "If I have accomplished anything in life, it is because I have been willing to work hard."

VOA: special.2010.03.28

Sometimes a person may be upset because he does not have something as nice as a friend has, like a fast new car.

VOA: special.2009.11.15

Girls from poor families can miss up to a week of school each month because they do not have enough money for supplies.

VOA: special.2009.03.16

Numbers of America's national bird, the bald eagle, have recovered largely because of measures to fight pollution.

VOA: special.2009.05.12

Astronomers have always thought that the Andromeda Galaxy was more massive than the Milk Way because it is believed to have more stars.

VOA: special.2009.01.20

But some studies have suggested they could because of a suspected link between inflammation and diabetes.

VOA: special.2009.05.19