Will the fear mongers please take a break. They have a track record of being wrong 100% of the time and yet they seem to be bellowing louder than ever. Global warming will not destroy the planet. It might change it but it won't destroy it. Artificial intelligence is not close and if it were I see no reason to jump to the conclusion that it would self improve at an exponential rate or want to do us harm. Neural modification is not close and if it were our humanity would not be cast aside willingly or easily. Nuclear catastrophe is unlikely and if it happened would not destroy the planet.
There are a few common threads here. One the world is massive and complex. The systems involved having many balancing forces. If they didn't then odds are they would have crashed already. The fact that they haven't means that there is likely not some tipping point that can be easily crossed. Two these doom scenarios are forseeable and preventable. I will not willingly walk off a cliff and most of semi-rational mankind will not either. The doommongers often point to the stupidity of mankind as the cause but that's just their bias based on some irrational sense of superiority. Three the doomongers have bad motives. They are either trying to get money, get power, get attention, or feed their own need to look down on the rest of mankind.
