Big Stars, Big Giving: Richard Branson treats charity like a business

Editor's Note: In an American Morning original series, “Big Stars, Big Giving,” Alina Cho looks at celebrity philanthropy and how these big stars can make a big impact. Through one-on-one interviews with Elton John, Ben Stiller, Madonna, Martha Stewart and Richard Branson, she shares what causes have become their passion, and how you can get involved.

In part five of the American Morning original series, "Big Stars, Big Giving," Alina Cho interviews Sir Richard Branson about his nonprofit foundation Virgin Unite.

To learn more about the organizations these stars have created to make a difference,

and how you can get involved, visit Impact Your World.