The Orange Stalin has already pushed the Doomsday Clock closer to eternal damnation. MAKE AMERICA GASEOUS AGAIN

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The reasons stated in your quoted article have little to nothing to do with Trump and his policies, at least directly.

Sure, he's a disbeliever in climate change and over the long term his anti-environmental policies will do harm but that's not what caused the forward roll of the Doomsday clock. It's mostly due to the the ever increasing and expanding abilities of numerous countries to have the weaponry to destroy the planet. And that IS scary.