This doomsday clock is a metaphor of how close humanity is to destroying the planet.
And as shown by Lawrence Krauss the world is now three minutes away from a global catastrophe.
But I mean… Is this really just a metaphor? This clock is the closest it has been to midnight since the Cold War.
Krauss is largely a joke. According to Krauss, words like “destroy” have no meaning since they are simply chemical connections with no objective meaning. So who cares. And since we lack any ability to exercise free will in his world, who cares where the clock is, we are incapable of altering it.