A new type of business is focused on making a difference in society as well as making a profit. Mike O'Sullivan reports, so-called social businesses are linking investors in the industrial world and entrepreneurs in developing countries.

LANCASTER, Pa. — Muhammad Yunus has made a life of challenging the status quo in his native Bangladesh.

With the snip of a ribbon, Dr. Muhammad Yunus officially opened the modest two-room office of Grameen America in Jackson Heights, Queens, bringing his micro-finance model from rural Bangladesh to urban America.

Grameen, the pioneering microlending institution, has seen a sharp rise in problems for millions of poor borrowers across the developing world in repaying loans as food prices soar, according to Muhammad Yunus, its founder and Nobel Peace Prize winner.