Heroes / Transformers

And I'm not referring to the popular NBC show or the warring robot blockbuster. I'm talking about true, real-life heroes and life transformers -- the founders, supporters, and workers of groups that are making a tangible difference in this world. Check these out:

Parikrma Humanity Foundation, providing schooling for children living in urban Indian slums.

The Carter Center, virtually eliminating guinea-worm disease in central Africa (among many other projects).

Nothing But Nets, combating malaria in Africa with insecticide-treated bed nets.

GAVI Alliance, improving child health in the poorest countries through immunizations.

Habitat for Humanity International, providing simple, decent places to live worldwide.

Others?