I just have to say Global warming was just another "shock" fad going on. Just like a few years ago, they were expecting the whole world to go into an Ice Age like Boan said. And, I believe that year was 2002-2004?
They tried to "shock" us Californians into panicking every time an earthquake happened because a tsunami might hit us. With all the earthquakes we've had, we haven't had one big wave, man! I'd be more worried about Florida, all out there hanging in the ocean instead of us!
Next thing, it's going to be massive cloud cover, or the Earth's mantle exploding in flames and 10 countries disappearing under a mound of boiling hot lava.
Just wait and see, they'll be "shock"-ing us again with something.