A speech by science adviser Michael Kratsios has attracted attention from people who think he means the U.S. now has time travel technology ...

A network of Earth's best clocks will be synchronised with the most accurate one ever sent into space. But the device has a ...

Now a Japanese company has commercialized one approach—an optical-lattice clock it claims is the most accurate on the market.

A new proof-of-concept study finds risks to cardiovascular health may be linked to the timing of nighttime meals, adding to ...

It's not an abstract question. One of this year's big travel trends is detour destinations – visiting faraway places like Japan, New Zealand and the United Arab Emirates. To get there from the U.S., ...