Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The first message sent by Morse code's dots and dashes across a long ...

Larry Kahaner | Larry Kahaner is an American journalist and author who resides in Bethesda, Maryland. Steve Galchutt shows off the custom-made low-wattage transmitter he uses on his treks. Chase Brush ...

The first message sent by Morse code’s dots and dashes across a long distance traveled from Washington, D.C., to Baltimore on Friday, May 24, 1844 – 175 years ago. It signaled the first time in human ...