The 'Apocalypse Clock' has 100 seconds left:

The end of the world is closer than ever, as determined by the scientists of the Bulletin of Atomic Scientists. Each year they warn of how many minutes are left for midnight, for the end of the world. They do it in the symbolic 'Apocalypse Clock', which this year, for the first time, no longer counts in minutes but in seconds. We have 100 seconds left, but the question that arises is how much those 100 seconds correspond. Can these scientists really determine when the end of the world will be?

via Wikipedia.