Jack Johnson is known as the world’s mellowest pop star. A surfer raised on the north shore of Hawaii, his acoustic strumming has been the default soundtrack to good-times beach living for more than 15 years. But these days, something’s up with Jack Johnson. He’s decided that in the current political and social climate, quietly supporting environmental non-profits and greening the music industry isn't enough. He’s ready to speak up, beginning with his new album, All the Light Above It Too. Executive editor Michael Roberts chased Johnson down to ask: What happened?