After his wife died, Dan Peterson didn't know what to do with himself. Then, he found a new friend in an unlikely place: the grocery store.

Nate Kramer was a tall, quiet collegiate swimmer when he was diagnosed with leukemia. He died four years later. But during treatment he met a therapist, and together they played and recorded music.

In 2013, Laura DiGeronimo got a holiday surprise, but not the kind many people would welcome. As part of the series, "Kind World," a story about a break-up, depression and shoveling snow.

Dylan Siegel was 6 years old when he hatched a plan to cure his best friend's rare disease. He ended up raising more than $1 million. Erika Lantz of the Kind World series brings us their story.