1. `Black swan` event
When it comes to the end of the world, always consider a possible black swan event.
One of the most popular black swan theories about human extinction is that we will invent death machines that kill us all.
2. Pandemic
Pandemics, if they break out in cities with thousands of people, will bring terrible consequences.
Even scarier, the human body is not the only way the disease spreads.
3. Meteors hit the earth
This perspective has been used in many fantasy films, comics, and novels.
All it takes for humans to fall into the same tragedy as the dinosaurs is an object large enough to smash the planet.
4. Natural disasters
Our climate is changing.
You might think the scariest part of climate change would be superstorms, but the real damage is the long-term change.
5. Radiation disaster
The most obvious way a radiological disaster could wipe out humanity is, of course, from an atomic war.
We could also die from a nearby gamma-ray burst, or an explosion of powerful radioactive particles from an exploding star.