Atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...

Let’s stop accusing President Trump of appeasing Russia and see if he can cut a deal with Russia and Ukraine to stop the ...

We’ve tried permanent daylight saving time before. In the 1910s, it was enacted as a wartime measure and repealed after a year. It came back in 1942 due to World War II, setting off decades of states ...