Hollywood Stars Join 2008 Earth Day Celebration

It's Earth Day and Hollywood celebrities are turning green as they join with the celebration in different ways.

Julia Roberts showed off her compost skills on Oprah Winfrey's TV show. The Pretty Woman star demonstrated how to mulch a compost heap and encourages everyone to have their own compost pit back at home.

Edward Norton celebrated Earth Day by encouraging the movie industry to be more green and embrace environment-friendly practices.

Rock Legend Paul McCartney appeal to the public to stop eating meat, and save the environment at the same time.

Glenn Close, Chevy Chase, and Jaime Pressly have teamed up with the Earth Day Network to create new t-shirts for an online auction that begins today in which proceeds will go to environmental education.

There are still a lot of Hollywood celebrities who are ought to be recognized this special day for their environmental campaigns:

Leonardo DiCaprio and his Foundation promotes environmental causes in 1998 and has become a one-man army in the fight against global warming.

Al Gore stars in environmental show, “An Inconvenient Truth” and continues to inform people in the farthest reaches of the planet about global warming.

Robert Redford is a promoter of solar energy, protector of the Utah Wilderness, officer of the Natural Resources Defense Council, and host to his eco-programming show on Sundance TV Channel.

Pierce Brosnan is named "Best-Dressed Environmentalist" in 2004 and served on the board of the Environmental Media Association. He campaigns for wetland protection, dolphin-safe tuna laws, and has protested against the U.S. Navy's widespread use of sonar (which can harm marine life).

Cameron Diaz - She hosted an eco-themed MTV Show, "Trippin."

Brad Pitt – Stars in sustainable design TV series and spearheaded the rebuilding of New Orleans in an eco-friendly way.

George Clooney – has launched Oil Change, a campaign designed to rid America of her dependence on oil.

Actor Ed Begley Jr.has a brand of eco-cleaners (Begley's Best), his own green reality show ("Living with Ed"), and Pee-Wee Herman-esque inventions and gadgets (the man can power his toaster with a stationary bike!)

Oscar-winner Cate Blanchett and her playwright hubby have converted their own home to solar power.

Daryl Hannah - This actress/environmentalist made a "splash" when she was arrested last year for staging a 23-day tree-sit trying to save L.A.'s South Central Farm, an urban community garden.

Anything but clueless, Alicia Silverstone, PETA's "Sexiest Female Vegetarian," owns a green home outfitted with solar panels and a table made from the flooring of an old bowling alley.

The Jonas Brothers share a Chevy Tahoe 2 Model Hybrid SUV. Natalie Portman started her own shoe line avoiding leather. Singers Joss Stone, Rihanna and Alicia Keys play Live Earth (concert for global aid).

Mary-Kate Olsen, Mischa Barton, Nicole Richie and Joshua Jackson are all involved with the Environmental Media Association while Hilary Duff and Orlando Bloom support organizations like USA Harvest and Global Cool, respectively.

Animal lovers Pink and Hayden Panettiere are PETA members.

And there's more:
1. Coldplay
2. Julia Louis-Dreyfus
3. Rosario Dawson
4. Arnold Schwarzenegger
5. Charlize Theron
6. The Police
7. Bono
8. Ed Norton
9. Matt Damon
10. Larry David and Laurie David

Happy Earth Day people!