1. The Comet

Two retired teachers bring astronomy to poor children in their school-bus observatory called, 'The Comet.'

3. The Patrons

A group of women in Veracruz, Mexico deliver food and water to undocumented Central Americans.

4. The Invisibles

Get to know the noble faces of some of the near 6 million undocumented Mexicans living in the U.S.

5. The Gang

Carlos Cruz changed his direction in life and formed an organization to build alternatives to gangs.

6. The Moles

The volunteer rescue brigade Topos Tlatelolco continue on 30 years after the 1985 Mexico City earthquake.