She shows how Darwin came to understand that these island animals had differences, developed over time, that helped them survive.

VOA: special.2009.02.27

And he continued to say them. Readers began to understand that America had a great new poetic voice.

VOA: special.2009.04.12

Only since the nineteen-sixties have scientists begun to understand that the Earth is a great, living structure.

VOA: special.2010.01.12

To understand that, you would have to travel back in time two-hundred-fifty-million years.

VOA: special.2010.01.04

First,you have to understand that my brother is one in a million.

VOA: special.2010.09.12

"I think the world need to understand that this is the new challenge of the 21st century, and this is the new war,"

VOA: standard.2009.05.10

(SAYING) Sariyev says he wants everyone to understand that those who today hang around offices planning to get into the raiding business or racketeering - the government's position is firm.

VOA: standard.2010.04.15

"We need to understand that the decisions that the president faces on Afghanistan are some of the most important he may face in his presidency about how we go forward there.

VOA: standard.2009.09.22

Miz Cheek says the health care and finance industries are known for using language that is hard to understand.

VOA: special.2010.04.30

"The ambiguity that's in those answers is very,very difficult for humans to understand, never mind a computer to understand.

VOA: special.2011.02.28

But Mr.Ker-Lindsay says Serbs are conflicted because they understand that their country's future has to be a part of Europe.

VOA: special.2011.05.28

But Miz Goodall believed that to understand animal behavior, the observer had to see the animals as individuals, not as interchangeable objects.

VOA: special.2009.11.18

Just simple things so that way they get to understand what it means to be an American student."

VOA: special.2010.05.27

I knew he did not understand, but like me,he took it to mean that I meant no harm.

VOA: special.2010.07.17