Rock is a form of popular music that emerged in the 1950s and that by the end of the 20th century was the world’s dominant form of popular music. It originated in the United States and spread …

Oct 2, 2025 · Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and …

Rock history can thus be organized around both the sound of cities (Philadelphia and Detroit, New York City and San Francisco, Liverpool and Manchester) and the spread of youth cults (rock …

Oct 17, 2025 · Robert Johnson, American composer, guitarist, and singer whose eerie falsetto singing voice and masterful rhythmic slide guitar influenced both his contemporaries and many …

Sep 26, 2025 · Arkansas’s governor responded by closing all of Little Rock’s public high schools in 1958–59. Other Southern cities followed suit, often implementing “school-choice” programs …

Sep 28, 2025 · Rock Hudson, American actor noted for his good looks and movie roles during the 1950s and ’60s, including Magnificent Obsession, Giant, and Pillow Talk, and for the TV series …

Nov 5, 2025 · Unusual rock outcrops, caverns, and springs are found in the area. The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Michele Metych.

This is a list of selected cities, towns, and other populated places in the United States, ordered alphabetically by state. (See also city and urban

Rock music is a form of popular music that emerged in the 1950s and can be defined as “a form of music with a strong beat”—it is difficult to be much more precise. It is also called rock and roll.

Rock's origins lie in rock and roll, a new form of American popular music in the 1950s that was personified early on by Elvis Presley. Other successful rock singers, musicians, and groups …