Al Gore is worried about the future. We've reached a point, he says, where the very survival of our civilisation is at risk. But he's optimistic that we can turn things around, too. Motherboard sat down with the United States' most famous – and surely busiest – former vice president at this year's Social Good Summit, where we talked about two possible futures Gore sees confronting humanity.I asked him to describe the best and worst case scenarios for what civilisation might look like 100 years from now. In one, Americans undertake an "Occupy democracy movement" to restore our political system, which Gore says has been "hacked" by money and special interests, and come together to fight climate change. In the other, the whole of human civilisation lies in ruin.Continue reading at Motherboard.