If you look at the tuning dials of most medium-wave (commonly known as AM) radios sold in the United States from 1953 through the middle 1960s, you’ll see triangle-in-a-circle symbols at 640 kHz and ...

We were all disappointed, no doubt, when we learned that the movie Oppenheimer didn't emphasize the role of the government-issue 1942 Plymouth Special Deluxe sedan that carried the plutonium core to ...