When she first found fame, the Grammy-winner was appalled to see how environmentally destructive the concert business can be. Now, as one of the most influential touring acts in the world, she is building a blueprint for change.

James Cameron and Billie Eilish discuss innovative 3D tech, the collaboration on her sold-out concert film, and what they learned from each other.

Billie Eilish and R.E.M. singer Michael Stipe don't seem to have a lot in common physically: She's in her 20s, while he's in his 60s. He has a huge beard, and she doesn't have any facial hair. She's