The cause is close to his heart, since Bieber’s mother, Pattie Malette, had him at 18 and raised him as a single parent.
Jack Johnson performs for eco-minded students in Hawaii.
Beastie Boys musician Adam Yauch was not only a talented singer, but also an avid humanitarian and socially responsible man.
Ed Helms shows love for L.A. environmental organization through bluegrass music fest.
Pickler met with the pachyderms at the Elephant Sanctuary, a refuge in Tennessee, where she worked as an elephant caretaker.
Bob Dylan will be honored for the impact that his work has had on society by the President by becoming a recipient of the Presidential Medal of Freedom.
John Legend joins forces with FEED Foundation to provide one million school meals for needy children worldwide.