I do think the U.S. has a moral and political leadership role to play.

The World Fellows have exceptional records of achievement and a proven capacity for leadership.

The water crisis in Flint, Michigan, has shown us what can happen when we ignore the warning signs of lead poisoning and corroding pipes.

As we celebrate Labor Day, we honor the men and women who fought tirelessly for workers' rights, which are so critical to our strong and successful labor force.

Civil rights and women's rights and gay rights all take time in this country.

We want to take the energy surrounding the Sandy Hook anniversary that might otherwise be consumed by grief or anger - or this week in San Bernardino by fear - and channel some of that to honor our common humanity and love each other.