Doomsday Clock moves to 11:55

LONDON, England (AP) -- The world has nudged closer to a nuclear apocalypse and environmental disaster, a trans-Atlantic group of prominent scientists warned Wednesday, pushing the hand of its symbolic Doomsday Clock two minutes closer to midnight.

It was the fourth time since the end of the Cold War that the clock has ticked forward, this time from 11:53 to 11:55, amid fears over what the scientists are describing as "a second nuclear age" prompted largely by atomic standoffs with Iran and North Korea.

But the organization added that the "dangers posed by climate change are nearly as dire as those posed by nuclear weapons."