Former vice president Al Gore used the success of his documentary, "An Inconvenient Truth" to expand his efforts to educate people about global warming - and to tell a few jokes.
The film turned Gore's road show about climate change into a film that won Academy Awards for best documentary and best song.
"My fellow Americans," Gore said Sunday. "People all over the world, we need to solve the climate crisis. It's not a political issue, it's a moral issue. We have everything we need to get started with the possible exception of the will to act. That's a renewable resource. Let's renew it."