An interview with accidental movie star Al Gore

For those who remember his ponderous, consultant-driven bid for president, the idea of Gore enjoying anything about campaigning may seem far-fetched. But this time, the campaign's not about him; it's about the issue that has been his consuming intellectual passion for nearly a quarter century: what he calls the "climate crisis." It's a perfect union of dedicated wonk and intractable problem.

Tags: Al Gore, climate change, global warming