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Golden Age

(Encyclopedia)Golden Age, in classical mythology: see mythology. ...

age grade and age set

(Encyclopedia)age grade and age set, differentiation of social role based on age, commonly found in small-scale societies of North America and East Africa. Age sets are a type of sodality (nonresidential groups tha...

rock music

(Encyclopedia)rock music, type of music originating in the United States in the mid-1950s and increasingly popular throughout much of the world. A turning point in rock music occurred in the mid-1970s in the ...

rock and roll

(Encyclopedia)rock and roll: see rock music.

Iron Age

(Encyclopedia)Iron Age, period in the development of industry that begins with the general use of iron and continues into modern times. In Asia, Egypt, and Europe it was preceded by the Bronze Age. It did not begin...

rock carvings and paintings

(Encyclopedia)rock carvings and paintings, designs inscribed on rock surfaces and huge stone monuments in many parts of the world by prehistoric or preindustrial peoples. They have been found on every continent and...

New Age

(Encyclopedia)New Age, a term popularized in the 1980s to describe a wide-ranging set of beliefs and practices that are an outgrowth of the counterculture of the 1960s and 70s in the United States. Adherents of the...

rock

(Encyclopedia)rock, aggregation of solid matter composed of one or more of the minerals forming the earth's crust. The scientific study of rocks is called petrology. Rocks are commonly divided, according to their o...

Gilded Age

(Encyclopedia)Gilded Age, a term used to describe a period in United States history—from roughly 1870 to 1900—when the wealthy elite consisted of industrialists w...

youth-and-old-age

(Encyclopedia)youth-and-old-age: see zinnia.