"This black t-shirt, which says “Silence = Death” with a pink triangle, symbolizes the struggle against AIDS.
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Interactives & Media, Worksheets
In this episode of the History Explorer podcast, curator Hal Wallace talks about the development of the laser, an invention that has as many practical uses as portrayals in science fiction and fantasy. In addition to audio, this resource includes related images and a teachers guid
Artifacts, Primary Sources
The Apple Macintosh introduced a graphic user interface (GUI) to the Apple line of computers. The idea had originated at Xerox's Palo Alto Research Center in the 1970s, but Xerox was slow to commercialize it. Apple proved far more successful when it introduced the Macintosh in January 1984, with