Plenty has been written about Al Gore making mega profits out of global warming. As the New York Times reported last week, as a partner in Silicon Valley venture capital firm Kleiner Perkins Caufield & Byers, he has cleaned up big time with its investments in smart electricity grids. That's on top of his companies focused on bio-fuels, sustainable fish farming, electric vehicles and solar power. And then there is London-based Generation Investment Management which he runs with David Blood.

As the Telegraph in London pointed out, Al Gore could become the world's first carbon billionaire. No doubt people will ask whether he should profit from climate change. We can expect the questions will grow louder, the richer he gets and the worse the problem becomes.

What's even more interesting now is while Al Gore is making millions off climate change, he is encouraging campaigns of civil disobedience. As he told The Guardian, civil disobedience has a role to play. Nothing wrong, he says, with people breaking laws and occupying buildings in the battle against climate change. Gore says: "Civil disobedience has an honourable history, and when the urgency and moral clarity cross a certain threshold, then I think that civil disobedience is quite understandable, and it has a role to play. And I expect that it will increase, no question about it."