That is why scientists today wonder at the depth of his knowledge and the strength of his arguments.

VOA: special.2009.02.25

That's why I must decide on something at once while there is still time, before I am famous.

VOA: special.2009.09.20

That is why it is hard to tell a powerful storm, Hurricane Andrew, caused severe damage to the area in nineteen ninety-two.

VOA: special.2009.06.30

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

"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

So I put you to the test, that is why I said you owed me 40 dollars.

VOA: special.2010.06.26

Experts say one of the reasons the gunfight is so interesting to many people is that no one knows who shot first or why.

VOA: special.2010.02.15

That is why the word heart is used in so many expressions about emotional situations.

VOA: special.2010.07.18

Maybe that is why there are so many expressions that use the word cold.

VOA: special.2009.12.13

That is why we are here today. I want to be clear about this.

VOA: special.2009.11.13

Maybe that is why the city's saying is "Our Future Is Our Past."

VOA: special.2009.06.01

That is why doctors advise people to perform monthly exams of all areas of skin, from the top of the head to the bottom of the feet.

VOA: special.2010.07.06

That is why President Abraham Lincoln named Grant commander of all Union armies.

VOA: special.2009.11.26