Happy Earth Day: Jennifer Aniston, Courteney Cox in dolphin PSA

jennifer-aniston-lolavie.jpgJennifer Aniston, Courteney Cox, Jason Mraz, Hayden Panettiere, Paul Rudd, Robin Williams and many more celebrities appear in a new public service announcement from the creators of Oscar-winning documentary "The Cove." The stars have come together in an effort to raise awareness about the brutal slaughter of dolphins off the coast of Japan.

"The Cove" producer Fisher Stevens reached out to friends like Panettiere, who appears in the film, and to other famous fans of the movie. In honor of Earth Day, the stars are asking you to go to TakePart.com to learn how to write leaders like President Obama, Vice President Joe Biden, and Japanese authorities and ask for the slaughter practices to be changed.

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