Volcanoes are the earth’s way of blowing off steam. Supervolcanoes, such as those found in Italy and Yellowstone National Park, can erupt at any time, triggering a massive explosion.
Supervolcanoes are miles in length and typically have numerous craters and vents. When they erupt, they can spew enough ash to block out the rays of the sun, causing global cooling.
4. Artificial Intelligence Take Over
Artificial intelligence is no longer a fantasy only found in sci-fi TV shows and movies. Computers are becoming faster, better, and smarter. AI home assistants are talking to us, and soon we’ll be riding in self-driving vehicles.
No one knows what happens when smart, sophisticated devices become superintellilgent to the point of running our lives. Will machines rule the world?
3. Nuclear War
So far, humanity has been able to successfully avoid an all-out nuclear war. Diplomacy and treaties are keeping humanity safe for the time being, but it only takes one crazy rouge leader, or a misunderstanding between two or more countries with nuclear weapons, to bring the world to the brink of a nuclear winter.
2. Pandemic Outbreak-Related Social Collapse
Fortunately, modern medicine has come a long way since the days of the Bubonic Plague, and much is known about how to contain a plague before it spreads.
Still, many watched in horror as Ebola spread from one African country to the next, seemingly unstoppable. These types of widespread pandemics can quickly collapse entire societies, creating panic and chaos.
1. Mega Asteroids
There was a time in earth’s history when dinosaurs lumbered about, eating, mating, and fighting for dominance. The world they inhabited ended with the devastating impact of a massive asteroid.
Could a dinosaur-killing asteroid be in our future? Probably not for another 100 million years, but there are plenty of lesser asteroids capable of causing major damage.