I struck boldly." Booth described how and why he had shot the president.

VOA: special.2010.01.07

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

They are using radars and other equipment to learn more about how, why and where tornadoes form.

VOA: special.2009.06.09

What and how the Japanese eat, he says,explains why they are the healthiest people on earth.

VOA: standard.2010.02.23

"People can look at things and be curious about them, but if you are an explorer you want to know why and how and maybe develop an experiment to test the hypothesis."

VOA: standard.2010.06.21

"Everybody used that picture as a motivational tool of why we're truly here, because regardless of what's going on and how devastating it is, there are still people that recognize and believe that the Comfort is here to help them."

VOA: standard.2010.03.26

"We are,as you may expect, encouraged by these results and look forward to undertaking further research to understand what it means, why the vaccine regimen was effective in some volunteers and how we might build upon these results in our collective research,".

VOA: standard.2009.10.20