18 months already? (Score 1)

So once again, "CO2 at 400 ppm! The End is Near!" prophets have come out with yet another insane prediction. And people on the chat boards believe it, again! In my 45 some years on this planet I have seen no less than 20 doomsday predictions (it's about every 18 months, it's like Moore's Law for crazy people). Some of the best nuclear war, nuclear power, DDT, ozone hole, over population, Y2K, and of course Planetary Alignment, just to name a few. So here is my question for the skeptics out there. Why do people keep believing this BS? Is it new suckers being born every generation who just don't know any better? Or is it the same fools who are just so gullible that they firmly believe the world is going to end every couple years despite the fact it never has? When Professor Paul R. Ehrlich wrote "The battle to feed all of humanity is over. In the 1970s hundreds of millions of people will starve to death in spite of any crash programs embarked upon now. At this late date nothing can prevent a substantial increase in the world death rate...", are these the same guys who believed it then or an entirely new batch of suckers?