Kathy Calvin: The United Nations continues to change with the changing needs of our world.

FORBES: Connect

The opinions expressed in this commentary are solely those of Kathy Calvin.

CNN: Giving each child the chance to live past 5

"This new way of building communities and sharing with one another is the way that modern movements will take hold, and social media is the medium that can connect these communities, not only at greater speeds and across boundaries, but in authentic and lasting ways, " said Kathy Calvin, CEO of the U.N.

CNN: Black Friday, Cyber Monday and now #GivingTuesday