Make a Difference

See the Movie That's Changing Lives:
Searching for Angela Shelton

Global Cool: http://www.globalcool.org/

Recharge a Car, Recharge the Grid, Recharge the Planet
A Google.org initiative that aims to reduce CO2 emissions, cut oil use and stabilize the electrical grid by accelerating the adoption of plug-in hybrid electric vehicles and vehicle-to-grid technology.
RechargeIT.org

Doctors Without Borders: http://www.msf.org/
Support this organization providing medical aid wherever needed, regardless of race, religion, politics or sex. 

TerraPass: http://www.terrapass.com
Reduce your carbon footprint 

Be the Cause: http://www.bethecause.org/
A community of individuals who create enriching opportunities of service.