In the last few years, inventive new forms of volunteering have emerged, pioneered by committed professionals, who are using their expertise to solve old problems. I call this "active citizenship" and it can change the world.

What could be more useful than applying high-level professional expertise toward problems faced by those who are less fortunate?

This year, millions of young men and women will graduate from colleges and universities in the U.S. They are some of the youngest leaders in the nationwide, multi-generational movement I call active citizenship.

In the world of advocacy and volunteering, a talented, ambitious person with a big heart and a big idea can build a support network that improves the daily lives of thousands of citizens.