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

But she adds that there may be lots of reasons why more women apply to colleges, and why colleges admit more women.

VOA: special.2009.11.19

"And,it is strange that if you hate my brother so much, why would you marry his sister!"

VOA: special.2009.06.27

That is why author and illustrator Rosalyn Schanzer chose to write the children's book "What Darwin Saw: The Journey that Changed the World."

VOA: special.2009.02.27

And that's why the American Recovery and Reinvestment Plan won't just throw money at our problems.

VOA: special.2009.01.09

They say there are other reasons why the large animals and people from that period disappeared.

VOA: special.2009.01.20

That's why creating jobs has to be our number one priority in two thousand and ten."

VOA: special.2010.01.30

"And that experience was life changing. And that's why I decided to start a charity."

VOA: special.2009.08.10

He says that as a child he did not understand why his father did not live with him and his mother all of the time.

VOA: special.2009.12.13

Then the gray-haired woman spoke: "So,you see,that's why I come and put flowers here.

VOA: special.2010.05.15

And the kind of sedentary lifestyle that we lead, are one of the reasons why we have every day the number of obese people in India increasing."

VOA: special.2010.05.12

And he said to us, "Why do you sit there like that?

VOA: special.2010.05.02

Well,I got them saddles built, and then somebody would say 'Hey,why don't you build me a saddle?'" That was how Nancy Martiny got into the saddle making business twenty years ago.

VOA: special.2011.01.31

"You can imagine the impact that this would have on whole communities throughout the country and why there would be such passions that have been passed on from generation to generation even at the remove of one hundred fifty years."

VOA: special.2011.04.09