@sjn: What I was merely trying to say, is that it has to be told in a manner that would avoid a potential large-scale panic. Don't imagine that if you comfront 7 billion people with a HUGE issue, they will just sit down and start thinking about changes.
At least 75% will start to blame "others" for being here, and being forced to change the way we live.
Can you hear statements like:
"It's those damn [insert local politicos here] that didn't warn use before. They should have invested in alternatives, blah blah blah".
Let me give you a real life example.
A friend takes out a huge loan to start a business in an area where he has NO experience. I have about 6 years.
I tried telling him very nicely : Dude, thowing in a large amount of money won't speed things up or make them better. Start lower and nicely build your way up. Use financing when needed to expand the business and you have a 99% guarantee that it will be usefull. I went to the extent of giving him a full scale consulting, based on my past experience, down to every detail of the business. Something other would have charged for.
His answer: Don't teach me how to do business, and other arrogant statements.
The result? Absolutely NOT A SINGLE CUSTOMER OR SALE, and ended up with a huge debt. He will be spending the next few years, paying the debt for a huge mistake. It's in the range of a few tens of thousands of dollars.
People are funny
I suggest you rent or buy the DVD, with Stephen Hawking's : The Mist movie. Contrary to believes, it's NOT A HORROR movie. It's about what people to, when the issue is under their nose.