Catastrophic risks are increasing, cooperation is declining, and swift action is needed from global leaders to correct course.

Nuclear weapons, climate change and biological threats are the biggest concerns.

The new Doomsday Clock time has been set by the Bulletin of the Atomic Scientists. Here’s what it means.

Wars, climate change, disruptive technologies and the rise of autocracy over the past year prompted scientists to set the clock at 85 seconds to midnight.

The Bulletin of the Atomic Scientists announced on Jan. 27 that the hands of the Doomsday Clock moved forward four seconds ...