Imaginary time is a wonky concept for our time-bound brains, but in quantum theory and mathematics, it’s a useful tool for ...

The arrow of time can teach us more about how the universe began – and how it will end, says quantum columnist Karmela ...

Hunting for the best summer flight deals? Google's five years of airfare data reveal the smartest times to book.

An earlier start in the championship match could make a 10-degree difference in playing temperatures. Safety of players and ...

Alabama spans a wide region, but every city, from Huntsville to Mobile, shares the same official time. Here's what time zone ...