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A subatomic particle discovered last year that may be the long-sought Higgs boson might doom our universe to an unfortunate end, researchers say. The mass of the particle, which was uncovered at the world's largest particle accelerator — the Large Hadron Collider (LHC) in Geneva — is a key ingredient in a calculation that portends the future of space and time.

Most Americans got an extra hour of sleep this weekend thanks to the annual shift back to standard time. Officially, the change occured at 2 a.m. Sunday, but most people set their clocks back before hitting the sack Saturday night....

At 2 a.m. Sunday, Americans will effectively turn back their clocks one hour -- in essence, allowing them to relive the 1 a.m. hour two times over -- as part of the semi-annual daylight saving routine.

Each year, Jan. 1 falls on a different day of the week, and the entire following year shifts accordingly. Schools, sports teams, businesses and banks spend many hours and millions of dollars calculating on what day of the week certain dates will fall, to schedule holidays and set interest rates... Two professors have proposed a calendar in which each 12-month period is exactly as the year before, on into perpetuity.

Researchers at Cornell University have made an astounding leap forward in cloaking technology. While other teams have been working on what have been traditionally seen as “invisibility cloaks” – using meta-materials to hide an object from visible light — this team has been working on something a bit more ambitious: hiding an actual event in time.

Remember, it's fall back an hour. Otherwise, you'll be an hour early on Sunday for church, golf or whatever. Residents of Hawaii, most of Arizona and some U.S. territories don't have to change since they did not observe daylight-saving time.

As you reset the clocks at 2 a.m. Sunday on the microwave, the TV and the bedside alarm, imagine yourself watching time fly in one of these clock-worthy cities.