The Doomsday Clock now stands at 89 seconds to midnight, the closest to catastrophe in its nearly eight-decade history.

You can stop a clock from ticking, but it's a lot harder to figure out how to stop humanity's relentless march toward self-annihilation.

The Doomsday Clock, a symbolic measure of humanity's proximity to catastrophic destruction, has been set at 89 seconds to ...

The Doomsday Clock is a metaphor for how close the world is to being inhabitable for humanity. Scientists just set the new ...