EmusicList.com

Which celebrities are really serious about changing the world? Whether their philanthropic endeavors are high-profile or they pitch in quietly, away from the cameras, here are 20 celebs that make a difference.

While many high-profile celebrities advocate for causes abroad, Shonda Rhimes has been steadily working here in the US. Rhimes, the creator, producer and writer for the hit TV series Grey’s Anatomy, has racked up a shelf-load of…

AC/DC will embark on an 18-month world tour in October, the hard rock band’s first since 2000/2001, their agent said Monday. A single is expected to hit radio in August. AC/DC released its last album, “Stiff Upper Lip,” in 2000, and launched a yearlong tour of 17 countries.

Light didn't reveal further details about the trek, which will promote the Anglo-Australian band's upcoming album, a Wal-Mart exclusive. A single is expected to hit radio in August. AC/DC released its last album, “Stiff Upper…