
Ok, time for a piece of Friday advice. Here goes: you can relax about the end of the world, and just live your life.
The two most likely ways that the planet and its 8.14 billion occupants would be destroyed are an all-out nuclear war, or an asteroid strike.
The first threat can be dismissed, because although 9 countries currently have nuclear weapons, no one is going to use them, because of what they call the doctrine of "mutually assured destruction". For example, Putin knows that if he launches all the Russian ICBMs, then Moscow, St Petersburg, him, and his house in the Kremlin will all be turned into dust.
The second risk, of Earth getting hit by a giant asteroid, is a more pressing concern. The dinosaurs were wiped out 66 million years ago, when a lump of rock about 16km wide landed on the Yucatan Peninsula in Mexico.
On that score, you can also relax, because there are astronomers that scan the night skies from observatories in Chile and South Africa, looking for asteroids heading our way. If any has a trajectory that puts us at risk, the plan is to send up a spacecraft to crash into it, knocking it off its course. That was already tested in 2022, when a NASA mission successfully impacted the asteroid Dimorphos.