Jamie Oliver creates Food Revolution Day on May 19.
Jack Johnson performs for eco-minded students in Hawaii.
Ginner Goodwin wears gown from H&M’s new eco-friendly collection.
Tommy Hilfiger designs new collection to benefit the UN’s Millennium Development Goals.
Colin Firth releases short film to save world’s most endangered tribe.
Rock legend Willie Nelson was honored with the Planet Defender Award for his philanthropic work.
Celebrity trash becomes upcycled art to benefit Keep America Beautiful.