Researchers have put a dollar figure on the health, safety and productivity toll Americans absorb every spring.

Changing the clocks twice a year is annoying, for sure, but locking the clocks may "be extraordinarily difficult" for some.

Legislative efforts to make daylight saving time permanent year round got a boost with support from President Donald Trump, who criticized the twice-yearly clock switching as cost-prohibitive. But ...

Some officials are trying to eliminate the process of changing our clocks each fall and spring. Here's why it hasn't been implemented yet. Carol Yepes via Getty Images This weekend, we spring forward ...

Add Yahoo as a preferred source to see more of our stories on Google. Many countries around the world and most of the United States still observe the practice of turning the clocks forward or backward ...