Ludacris, with his eponymous youth charity and new reality show, is the new rapper with the heart of gold. The sometimes actor has signed on to star with Tommy Lee in a reality show called Battleground Earth that will air on the Discovery Networks' new eco-friendly cable channel, Planet Green.

According to Daily Variety, the show will feature Ludacris and Tommy competing in various challenges around the country that highlight green issues. The series will culminate with the two artists meeting up in Los Angeles to headline a concert at the Greek Theater – with proceeds benefiting Griffith Park.

Well, we all knew Ludacris liked the green stuff.