Daylight Saving Time

Researchers analyzed 12 years of county-level fatality data from the National Highway Traffic Safety Administration. Across the country, they found higher crash fatality rates in places where social time doesn’t align with solar time.

More than a third of U.S. states now support the idea of making daylight saving time permanent. It's already in effect for about eight months of the year.

Daylight Saving Time ends this weekend. Be sure to set your clocks back one hour at 2 a.m. Sunday or before going to bed Saturday night.Fire officials say…

The time change can cause all kinds of confusion. Professor Erik Herzog says it can also have dramatic biological effects.