It may seem improbable that two radio stations that announce the time could end up being world-saving superheroes. But one day Colorado shortwave station WWV and its sister station WWVH in Hawaii may ...

If you tune a shortwave radio to 2.5, 5, 10 or 15 MHz, you can hear a little part of radio history — and the output of some of the most accurate time devices on Earth. Depending on where you are in ...