Yes, there is actually such a thing as a Doomsday clock and someone is watching and calculating all the factors that cause it to lose or gain time.

At a news conference that took place today at the New York Academy of Sciences Building in New York City (it's always New York) it was announced that the Doomsday Clock has been delayed by 1 minute for the first time in its 63-year history.  By moving the clock from 5 minutes before midnight to 6 minutes before midnight, scientists showed optimism for our future as a race. Yay for us!

The idea and the official setup of this end-of-the-world clock, formed in 1947,  and is used to calculate how close we are to the end of the world due to catastrophe caused by nuclear weapons and other factors like global warming.

The actual clock (yes, it is a real clock) is housed at the Bulletin of Atomic Sciences (BAS) office in Chicago, Ill.

Well, I guess we can all sleep easier tonight.   Read more about the Doomsday clock at Wikipedia.