The Doomsday Clock is now at 89 seconds to midnight. Sky News looks at the meaning behind it, what it is and how it works.
The Doomsday Clock has been reset by scientists to 89 seconds to midnight - closer than ever before to global catastrophe ...
The Doomsday Clock is a metaphor for how close the world is to being inhabitable for humanity. Scientists just set the new ...
The Doomsday Clock, a symbolic measure of humanity's proximity to catastrophic destruction, has been set at 89 seconds to ...
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