The Caring for Your Parents Vodcast is an eight-part interview with caregiving experts Hugh Delehanty and Elinor Ginzler. Each episode is approximately four minutes long. You can subscribe to the ...

German envoys arrive at Versailles for peace treaty ceremony, 1919 World War I left Germany in a complicated and difficult situation that produced conditions Adolf Hitler could exploit, but Germany's ...

The Nazis did not start World War II with a plan to eliminate the Jews. This solution evolved—especially from 1939 to 1941—as they tried different techniques to accomplish their goals. Particularly in ...

"I would never have thought that such a storm would rise from Rome over one simple scrap of paper..." (Martin Luther) Few if any men have changed the course of history like Martin Luther. In less than ...

Robyn Muncy is the Associate Professor of U.S. History and Women’s History at the University of Maryland, College Park. She is the author of Creating a Female Dominion in American Reform 1890-1935; ...

Experienced caretakers and eldercare professionals know that a crisis is the hardest time to learn about the complex world of eldercare. Yet most people put off thinking about these difficult issues ...

Sound vibrations leave the singer's mouth. The higher the pitch of the sound, the higher the frequency, or number of vibrations in a given amount of time. The sound enters the microphone, where it is ...

OK. So we have a signal that is sent to a radiosmitter's antenna. How does that signal get from the antenna to the air? Let's first take a look at the signal. The signal is an electic current, and ...

Have the class generate two questions about something students are studying and would like to know more about. They might wonder, Can you predict an earthquake? What's a neutrino? Was Freud crazy?

FM radio works the same way that AM radio works. The difference is in how the carrier wave is modulated, or altered. With AM radio, the amplitude, or overall strength, of the signal is varied to ...

To the shipboard radio operators, it was a miracle -- a Christmas miracle. Instead of hearing the usual dots and dashes of Morse Code, these listeners heard an eerie Silent Night, played by a violin.

John Bardeen had met William Shockley when they were both in school in Massachusetts. In 1945, when World War 2 ended, Shockley was put in charge of a new research group at Bell Labs and he wanted ...